Um the larger question is: WHY did the American Psychiatry institute suddenly proclaim HOMOSEXUALITY isn't a mental illness despite the fact certainty it 99.99% is? That is a real head scratcher. You don't need a weather man to tell which way the wind blows.
You realize that a percentage of animals in nature are gay, as well, right? The question is, why does nature allow it?
You do realize that pithy (or, in your case, not-so-pithy) aphorisms do not necessarily prove a point, right?
Moreover, your point of the change being 'sudden' is without foundation, to wit:
The reclassification of homosexuality from a mental illness to normality was a gradual process that took place over several decades. The process involved changing attitudes towards homosexuality, as well as scientific research that challenged traditional beliefs about homosexuality.
In 1973, the American Psychiatric Association (APA) removed homosexuality from its list of mental disorders in the Diagnostic and Statistical Manual of Mental Disorders (DSM). This decision was based on a growing body of research that showed that homosexuality was not a mental disorder, and that attempts to change sexual orientation were often ineffective and harmful.
Not until 1987 did homosexuality completely fall out of the DSM.
www.psychologytoday.com
The decision to remove homosexuality from the DSM was also influenced by changing social attitudes towards homosexuality. The gay rights movement of the 1960s and 1970s had helped to raise awareness about discrimination against homosexuals and to challenge negative stereotypes about homosexuality.
While the APA's decision to remove homosexuality from the DSM was an important milestone, it did not immediately change attitudes towards homosexuality in the wider society. Discrimination against homosexuals continued to be a problem, and it was not until many years later that homosexuality was fully accepted as a normal variant of human sexuality.
Overall, the process of reclassifying homosexuality from a mental illness to normality was a complex one, involving scientific research, changing attitudes, and social activism.