i certainly don't hate gay people but i guess i've never really accepted the ' i was born this way ' reason even though the evidence was right infront of my face.
A lot of straight men fear either being gay themselves or being raped. They therefore dislike the idea that gay men exist naturally and to justify their dislike they attempt to kid them selves that gay men choose to be homosexual.
When I see someone claiming that they think its a choice or being homophobic, I see a man either afraid of his own feelings towards other men or afraid of being raped.
The latter is a very foreign idea for most straight men, rape is associated with women victims in society, the sudden idea that they can also be raped scares a lot of men when they have to accept that gay men exist. It must be a hard thing to have to deal with.