I guess it boils down to what you personally believe. Yes the bible says homosexuality is wrong but its also says many other things that are commonly ignored.It seems to me that many people who disagree with homosexuality believe that gay folks choose to be that way or are somehow perverse by sin. After knowing many gay men and women and asking them why they are like they are the general consensus I feel is that they were born that way. Many of my friends have struggled with it, not understanding why they have such tendencies.
When asking why are you gay the best response I received was, why are you straight? And when I though about it I really didn't have a good answer. It's not because how I was raised and though I am a Christian, my faith was not a factor in my innate sexual preferences. It is simply how I am and how I was created. To look someone in the eye who feels the same way and be told that, I find it impossible to rebut them.
How can I tell another fellow Christian that they are full of sin and will burn in hell? That they were born already poisoned by evil? If a person says that's how they feel inside then dammit the world should except them as so. God would not have placed these people all over other world from all different races if it wasn't meant to be so.