I have got quite lucky with my parents, they don't seem that bothered, maybe sometimes ignorant but its clear they still like me (well, hopefully. My younger brother seems OK with it, jokes about he is more manly than me haha. But I'm sure my older brother is going to be a right twat about it, but feck him.
I know it must hurt to have unaccepting parents, but just think, the only link you have to them is DNA, if you weren't related you probably couldn't care less about them. You don't owe them anything- one day the universe will end and none of this will matter, jus try and enjoy the hand you've been dealt.