Quote From: rivieraI think being gay is genetic but not a good thing. I don't think it is normal or should ever be considered normal but a biological defect like mental illness. As so many people say they wouldn't choose it .  
A lot of people have experimented with bi-sexuality in their youth thinking gay sex is ok.  
I think if you are gay "that's nice" but I really don't care what you do in private. I would like to know why so many married men go to parks to pay for sex with underage boys/ 
Homosexual folks are pretty consistent in populations world-wide. No matter what country you look at, which belief system people belong to, population size, and whatever other factors you can think of... it's always around 10% of the population that is homosexual. It is normal. Whether you like it or not, it's a natural thing to happen. It's not only a strictly human phenomenon either. Did you know that at certain temperatures you can make groups of male flies form long mating chains? Did you know that there are species of fish and other organisms that can alter their sex to accomodate their community? Ever seen a hermaphroditic banana slug mate with another of its kind, then watch them each chew off the other's penile projection so the other can't mate again? Nature is full of fun quirks, and homosexuality is one of them.
So what if we don't know what causes it. We'll figure it out someday. Most scientists are split between whether it's caused by environmental pressures or genetic changes. Nature vs. nurture. Homosexuality is a fact of life, and for anyone to deny that is just completely silly.
Even more silly is for someone to think that their beliefs should come before personal freedom, equality, and respect for our fellows. Marriage should be something that anyone can participate in. It's a union between two people who love each other. I know that's beside the point, but it is very important.