You know what I hate the most? How the meaning of the word has become so corrupted. Homophobia, in the strictest sense, should be fear of homosexuality. In modern usage, though... well, I'll let Wikipedia do the talking:
Hell, I want gay to mean happy again. You know why I dislike you, homosexuals? I'll tell you why. Because you're messing up my language >_<Homophobia is a range of negative attitudes and feelings towards lesbian, gay, bisexual, and in some cases transgender and intersex people. Definitions refer variably to antipathy, contempt, prejudice, aversion, and irrational fear.