Nope. Gay people aren't forcing their sexual preferences on others, either. But historically, blue-eyed people have been discriminated against in some parts of the world, accused of using the evil eye, as have left-handed people (ever think about the meaning of the word "sinister"?). I bet you would find those biases barbaric, as they are. Fun fact: Actress Jennifer Lawrence is both left handed and blue-eyed, making her a less than one in one hundred sport.
Being gay is equally a matter of random chance at birth, approximately as commonly distributed in the population. It's just that it's not culturally accepted yet. But let's get there as a culture, and stop being the bigots our grandchildren will laugh at.