Is it homophobic ...

[marshlander]

Thanks for the response. THing is, there's no such thing as gay gene, so there's no scientific evidence to show that gay people are born that way.

I gave the WIKI reference because it seemed like one of the more easily digested synopses. I take it you didn't read it?

But my point is: what's wrong if a person makes a conscious choice? I see nothing wrong either way. Also only that can explain bisexual tendencies.

There is nothing wrong with making a choice. It's just that it's probably somewhat less likely if the choice is against one's natural orientation. Many people try to live a straight life (which you might refer to as a "choice") and fail miserably.