I Do Not Understand Homophobics

I was born around a homophobic culture. Even my fiance is homophobic. I am the only one who don't hate homosexuals. And that gives me another fearful thought. What if my future child turns out to be homosexual? I am sure my family won't accept him/her and try to hurt my child in any way possible. I don't know how I can protect my child from them. I wish my child won't be a homosexual for his/her sake.