I'd like to first state that Teaching homosexuality in school is somewhat a fallacy. As schools do not teach children to be homosexual or to be more capable in homosexual acts. Schools instead tend to teach about homosexuality which implies a very important thing.
Now to the point itself. Homosexuals compromise roughly 5% of the population as far as I remember. This percentage is even wider if you add in people who have bisexual tendencies but aren't fully homosexual. In that sense teaching about the existance of homosexuality and the fact that some people do have a sexual preference for their own gender is completely legit. In the same vein as teaching about the existance of other races.
Likewise the presence of mentions of homosexuality among the population could easily help people who are afraid of coming out making their own decisions and make society somewhat more prepared for their existance.
Yes it is. No baby is born saying, "I like other men!" or "I like other women!"
Sorry, everything you do in your life is a decision. I don't buy this "born this way" bullshit.
What happened, was homosexuality used to be taboo, not accepted anywhere. Then, gay people saw this, wanted to change it, so started to say, "Oh, we were born this way!" to make it more widely accepted.
It's like me saying I was born with an attraction to a particular hair color. It's a preference. I know a few gay people who say it is indeed a choice they made.
So the fact that you like blondes more than brunnetes is a decision? Or that you're a boobs man instead of an ass man is a decision? Or perhaps finding out that you have a fairly massive influx of blood into your penis at the sight of a man instead of a nude girl which you so hope to be sexualy attracted to?
Sorry while in some borderline cases there are people that can go either way, in a lot of cases people either due to their subjective experiences or biology end up with a preffered sexuality.
It's a choice. Pedophiles use the same fucking excuse. "I was born this way!"
The truth is pedophiles were born that way. The differences between pedophilia and homosexuality is though that it harms no one as normal homosexuality happens between to consenting adults. Pedophila not. As a result pedophilia is illegal and pedophiles that cannot control their own urges persecuted.