LUST...!!

The word lust is phonetically similar to the ancient Roman lustrum, which literally meant "purification". This was the five-year cycle time for the ritual expiation of "sins" called the lustration as practiced in ancient Greek and Roman cultures, occasionally involving human sacrifice. Sexual intercourse was one of a list of sins requiring lustration. Another similar word existed in ancient Latin, lustratio.

The Seven Deadly Sins, written during the 5th century is a similar list of sins requiring expiation or forgiveness. These doctrines forbade even thoughts and desires for fornicatio (fornication), later generalized as luxuria (lust/lechery). The concept also was progressively embodied in debates about mandatory Clerical celibacy beginning in the 1st through 5th centuries and following. For example, Henry Charles Lea states that "Sixtus III barely admits that married persons can obtain eternal life" in his "Sacerdotal History of Christian Celibacy". He also states, "Siricius and Innocent I ransacked the Gospels for texts of more than doubtful application with which to support the innovation of required celibacy".
However, in the 11th to 15th centuries the northern European usage of the verb still meant simply "to please, delight;" or "pleasure". A related form "lusty", originally meant "joyful, merry" or "full of healthy vigor". The word "lust" began being used in the 16th century in the Protestant Reformation's early non-Latin Bible translations. This is despite the fact that the original Koine Greek Bible has no single word that is uniquely translated as heterosexual lust.
Today, the meaning of the word still has differing meanings as shown in the Merriam-Webster definition. Lust: 1. a: pleasure, delight b: personal inclination: wish 2. intense or unbridled sexual desire: lasciviousness 3. a: intense longing: craving <a lust to succeed> b: enthusiasm, eagerness admired his lust for life.

IN RELIGION

CHRISTIANITY(Protestantism)

In translations of the New Testament, the word "lust" is occasionally used as a translation of the Koiné Greek word, 'επιθυμία', Strong's number 1939 and in its various forms. The related word 'ἐπιθυμέω' Strong's number 1937 is rendered as "lust" in the oft-quoted King James Version verse here:

You have heard that it was said, 'Do not commit adultery.' But I tell you that anyone who looks at a woman lustfully 1937 has already committed adultery with her in his heart.. (Gospel of Matthew )

However, this verse represents the only instance 'ἐπιθυμέω' is rendered as 'lust' in the New International Version of the Christian Bible. Further insight can be gained from Jesus Christ describing His own feelings using both of these word forms in Luke 22:15:

And he said unto them, With desire 'επιθυμία' Strong's number 1939 I have desired 'ἐπιθυμέω' Strong's number 1937 to eat this passover with you before I suffer (Luke 22:15, KJV)

Note also that doubling two similar words in Koine Greek is not mere redundancy. Rather, it is a common semantic mechanism to accomplish the emphatic voice. Various versions therefore render Christ's words in Luke 22:15 as "eagerly desired" NIV, "great desire" BBE, "fervent desire" NKJV, "earnestly desired" WEB, RSV. Obviously, Mt 5:27–28 has no expression of intense desire using this mechanism.
CHRISTIANITY(Catholicism)
According to the Catholic Encyclopedia, a Christian's heart is lustful when "venereal satisfaction is sought for either outside wedlock or, at any rate, in a manner which is contrary to the laws that govern marital intercourse". Pope John Paul II states that lust is totally different from the natural desire for sexual love of man and woman.
Lust is considered by Catholicism to be a disordered desire for sexual pleasure, where sexual pleasure is "sought for itself, isolated from its procreative and unitive purposes". In Catholicism, sexual desire in itself is good, and is considered part of God's plan for humanity. However, when sexual desire is separated from God's love, it becomes disordered and self seeking. This is seen as lust.

HINDUISM
In the Bhagavad Gita, Lord Krishna, an Avatar of Vishnu declared in verse 21, that lust is one of the gates to Naraka or hell. "Arjuna said: O descendant of Varasni, by what is one impelled to sinful acts, even unwillingly, as if engaged by force? Then Krishna said: It is lust only, Arjuna, which is born of contact with the material mode of passion and later transformed into wrath, and which is the all-devouring sinful enemy of this world. As fire is covered by smoke, as a mirror is covered by dust, or as the embryo is covered by the womb, the living entity is similarly covered by different degrees of this lust. Thus the wise living entity's pure consciousness becomes covered by his eternal enemy in the form of lust, which is never satisfied and which burns like fire. The senses, the mind and the intelligence are the sitting places of this lust. Through them lust covers the real knowledge of the living entity and bewilders him. Therefore, O Arjuna, best of the Bharatas, in the very beginning curb this great symbol of sin—(lust) by regulating the senses, and slay this destroyer of knowledge and self-realization. The working senses are superior to dull matter; mind is higher than the senses; intelligence is still higher than the mind; and he [the soul] is even higher than the intelligence. Thus knowing oneself to be transcendental to the material senses, mind and intelligence, O mighty-armed Arjuna, one should steady the mind by deliberate spiritual intelligence and thus—by spiritual strength—conquer this insatiable enemy known as lust." (Bhagavad-Gita, 3.36–43) In this ancient manuscript the idea behind the word 'Lust' is best comprehended as the psychological force called 'Wanting'

ISLAM
In Islam, intentional lascivious glances are forbidden. Lascivious thoughts are disliked, for they are the first step towards adultery, rape and other antisocial behaviors. The prophet also stressed the magnitude of the "second glance", as the first glance towards an attractive member of the opposite sex could be just observatory, the second glance could be that gate into lustful thinking. Islam does not advocate celibacy but it requires marriage to conduct sex legally. So in conclusion Islam prohibits the actions that may lead to forbidden sexual acts, especially lustful gazing, to decrease the probability of "sinful" behavior.

21st Century LUST...
As we all know now that how bad a lust can affect our lives. Now we'll show you some examples of the game of lust in21st century's reality :

1.  People fall prey to lust generally after seeing some porn,pornographic videos or some other such types of activities.
2. Lust generally comes as a predator to kids in their to kids in their teens.
3. The result of falling prey to lust ends up doing something illegal and non sense full like raping , watching something obeisance, participating in something illegal like striping clubs, raid parties etc and it also results in gang rape.

One can be protected from the hunger of lust from being avoided in being accused in some cases given above and for kids lust can be drawn away by the participation and interaction of their parents.....