Why do people still hate gays and their rights?

I am straight...and don't get me wrong, the tolerance level has totally increased since the LGBT's fine work.�Personally, I�have always viewed homosexuality as natural, it has been observed in more than 500 animal species. As being such, I cannot for the life of me understand why human beings are so averted to it. Sexuality is after all the most personal yet fundamental thing about us as individuals, others have no business dictating what is natural and what isn't (so long as it doesn't intentionally harm other people in light of recent events involving the Catholic Church...). Most people are so excruciantingly ignorant and chauvinist,�that they cannot or will not look beyond what they see and claim to know with their own two eyes. It is pitifully disgusting isn't it? How�we claim to be the most advanced, civilized and intelligent species on the planet, and yet cannot look beyond what others prefer to do with their partners in the comfort of their own bedrooms. Iv'e seen dogs treat each other with more kindness and compassion that the vast majority of the human race. Live and let live right? I have read maybe 20 some articles about the "cons" of it, and logically, all can be easily countered. Now I'm not saying that people are not entitles to their opinions, but seriously?