That's quite the assumption.
I'm gay and I wouldn't change my orientation. I have endured so much and learned so much and grown so much because I'm gay. I am so much stronger because I am gay. I know what's really important and what's not because I'm gay. I've learned to validate myself instead of turning to other people because I'm gay.
Being gay has made me a much better, more adaptable, independent person. I never would have learned to use adversity to build strength of character if I wasn't gay.