It's about perspective. As humans, we have neither the knowledge nor authority to exclude anyone from the kingdom of God. I agree that fact hasn't kept many from trying. However, that is neither the central issue or intent (no matter how poorly practiced) of religious organizations.
I'm not talking about the faith, you seem to be a good enough person that wouldn't let the faith make you hate people because they are not part of it or disagreed with you. That is rare.
The problem as i see it is that no one cares about what Jesus had to say, his words about love and tolerance are going unnoticed while the hatred flows over while people proclaim that gays are subhuman scum that should not be tolerated.
It's a problem that has changed shades several times in history and it's not because of the religion as i alluded to in my first post.
I would say it's the central issue since it is the ONLY part of personal faith that deals with anything BUT the personal faith, thus it becomes the central issue in society.
Inclusion, we are good, exclusion, they are not.
Inclusion, we get rewarded, exclusion, they get punished.
I don't even have a problem with that as long as it's personal, you can secretly condemn whoever you may want to condemn but if you start working so that they cannot be married or so that your religion has to be taught in schools or so that a prayer from your religion alone has to be said in government meetings... we have a problem.