Hankering after material happiness is called Lust & such activities are sure to meet with frustration in the long run.
Lust means trying to enjoy in ignorance.
Sex could be a gift of God but when it becomes an obsession, it blunders all intelligence and people are driven to abominable acts to satisfy their lust.
Four Arrows of Kamadev: 1)Harshanam – boy and girl indulging in flowery thoughts for each other 2)Roshanam – endeavoring hard to get each other 3)Shoshanam – exploiting each other 4)Maranam – killing each other.
What is the cause of sinful life? Lusty desires and anger; the two go together. If lust is not satisfied, then one becomes angry.
Lecture on Real Success Stories Are in Srimad-Bhagavatam (SB 8.4.15; Ljubljana, Slovenia, 26 Dec 1998)
Lust, when sits in mind and tries to satisfies itself, is like the forest- fire, the more we feed the hungrier it becomes!