Why do they have gay games? Isn't this unnecessary?

The Gay Pride parade I can sort of understand, because it celebrates gaydom and helps people feel good about themselves (although I could live without the drag queens and the Speedos galore). However, it makes absolutely no sense to have Gay Games! They came to Chicago a couple of years ago and I saw these two men in thier little uniforms on the El. They looked so gay! Well, they were gay, but what is the connection between sports and one's uality? No one is banned from sports due to their ual orientation. It's not like the ***** League, which needed to exist due to racial prejudice. WTF?