Definitely not the most important issue but it was the issue we are discussing. I agree that those issues you mentioned are much more important but they're even harder to change than simply letting people of the same gender get married. Gay marriage laws are changing in places around the world because it's much easier to change than solving poverty in third world countries, as much as we would all like to do it it's just not that simple. For the other examples regarding women's rights in some countries that is also harder to change because of it being instilled in their tradition and religion. People in the Western world opposing gay marriage is also somewhat of a religious issue for some but with no state religion it isn't something that is enforced as strongly as it would be if it were.
Just to reiterate, I agree that gay marriage isn't as big an issue as those other issues you mentioned.
I don't think you're homophobic, nothing wrong with your opinion. Sorry if I have been discussing with an attitude or something, today I've been kind of up and down so I didn't mean to be aggressive in discussing with you.
Don't worry is just a little difficult for me to understand the ''feeling'' of the message, because I don't get to practise my English a lot and I get confused some times
But you have to understand it's very difficult for some people even if they are forward thinking to beagainst or be in favor of gay marriage, because things as religion and personal beliefs intervene.