How is it any better or worse than any other form of prejudice? Don't take the high road here, everyone has their cultural taboos. I didn't say anything about this part of this thread, because I know that I have my own.
I suspect the only thing you'll be seeing from me is "WOAH! That's taboo" or just being a little jumpy.
One can assume that homosexuality is a taboo subject to anyone that could reasonably be considered a homophobe. It's not taboo to myself, and likely not yourself; but I would wager that neither of us would seek it out, either.
My point was that everyone has something that is taboo/offensive to themselves, whether it's due to their upbringing, culture or personal issues. I am not an exception whether I could prevent others from engaging in my taboos or not. I would be willing to wager that you are not an exception either, if I could disprove a negative without your participation.