By the way,
"Show me one, big mouth, that concludes, that homosexuality is solely genetic...and not behavioral"

There are innumerable personal stories, for decades, of people who led unhappy lives TRYING to be what YOU consider 'normal', and denying feelings that they remember from their earliest times about who they were attracted to.
For many years, almost no one could tell them why they could NOT overcome this...then gradually, DNA and hormonal studies began to show the anomalies which helped clarify things.

It is also the case that the situation is not 'either/or'. As might be suspected, if the science is accurate, DNA and hormones, etc. also mean many people are BI-sexual in various degrees, and have 'some' choices in exactly how they express it and manage their lives. In the meantime, there are STILL cases of Gays & Lesbians marrying to provide themselves with convenient 'cover' in order to hold jobs where people who think like YOU might cause them grief!

(yeah, I saw the lame insult on MY name)