Of course it is.
This whole 'born with it' theory is a load of rubbish. You're born with cystic fibrosis, that's not a choice. You choose your partner; and if you happen to choose the same sex, then you have chosen, consciously, to be homosexual.
It's been pushed as justification for homosexuality for several decades now, and just because it's simply not worth the hassle or bother to argue it anymore, it's believed incorrectly to be the 'general consensus' when in reality it never was, or will be. I wish people would stop pushing their opinions on others on this matter though, it's exhausting to constantly read about it in the media. I think they deserve the same rights as every other person in this world, but stop trying to convince those who don't share the same opinion as you, that it's 'normal' or 'right'.
I'm just saying what most people don't say/are afraid to say anymore - which is completely understandable though. I don't bother voicing my opinion on this matter in person anymore, as it helps to avoid the onslaught of verbal diarrhoea that comes from the overly open minded liberals who can't see the basic importance of procreation.