Originally posted by The Man
It's pretty much been proven that people are unable to choose their sexual orientation. Think about it - given the vast majority of people who discriminate against homosexuals, who in their right mind would choose to be one unless it were natural for them? It's almost conclusively been linked to a genetic imbalance in chemicals of some sort, I believe. I don't know much about it beyond that.
It's not really a chemical imbalance, more like with some interior sagital area of the brain that tends to be wider in homosexuals...I forgot the full terminology...but it was an interesting read in a bio-statistics book.