The gay life of libertine sexual promiscuity was described vividly by a Victorian gentleman in his autobiography, My Secret Life. In the late twentieth century, homosexuality advocates chose to reclaim the word "gay" as a badge of honor, implying that promiscuity and immorality were acts of courage deserving approval from the mainstream.
- The word gay in the 1890s had an overall tinge of promiscuity -- a gay house was a brothel. The suggestion of immorality in the word can be traced back to 1637. 
- A triumph of consciousness-raising has been the homosexual hijacking of the word "gay". I used to mourn the loss of gay in (what I still think of as) its true sense. But on the bright side (wait for it) gay has inspired a new imitator, which is the climax of this article. Gay is succinct, uplifting, positive: an "up" word, where homosexual is a down word, and queer, faggot and pooftah are insults. 
The gay life consists of immoral sexual activity, particularly homosexual or bisexual.
The gay lifestyle, written about as early as the Victorian era, is contrary to established morality, usually consisting of flagrant promiscuity.
In My Secret Life, the word "gay" referred especially to prostitutes, who often consorted with either sex.  In the latter half of the 20th century, the Sexual Revolution began to mainstream the word gay, with the result that American society is split. Around half view homosexuality in positive and affirmation terms, while others continue to condemn it on Biblical grounds.
Homosexual activism and the United States
The atheist Harry Hay is founder and progenitor of the activist homosexual agenda in the United States.
- Gay, Lesbian, Bisexual, Transgender--Whatever, Gary Bauer, Human Events, April 11, 2008