To be honest, I'm more surprised that it's a big enough deal to keep cropping up so often. Personally, I'm a definite zero on the Kinsey scale - completely straight - but unless it starts affecting me (like the schoolmate who insisted on trying to grope me despite reprimands back in high school) I don't see that it's any of my business what somebody's preference is.
In my view, it's like music. I like jazz and funk and stuff; other people like Britney Spears. That doesn't make them bad people, just ones whose music collection I won't ask to borrow. (The Justin Bieber fans, of course, are another matter, but they fall outwith the remit of this metaphor.)
I don't like reading slash fiction, for instance; it's not to my taste, and it's not something I enjoy seeing in any detail. I've occasionally been told I'm a homophobe because I don't think Harry/Draco fanfic is plausible - for me, though, it's a character issue. The real test is how one treats real people, and as far as I'm concerned people are just people. Some have dangly bits, others don't, and I really couldn't care less where they like them stuck.
Incidentally? My brother-in-law's gay, and a jolly decent sort in his own raucous way. And my wife's bi; her old girlfriend, a marvellously geeky sort (like most of my wife's friends, thankfully) came to our wedding.
So yeah. The only thing that annoys me about homosexuality is when people think it's a big deal - whether in the sense of objecting loudly about it (Exactly how does other people being gay affect you, Pastor Phelps?) or in the sense of defining themselves by it, over and above any other attributes, like in Pride parades. I'm straight, but of the hundreds of factors that define me, my appreciation for the be-bosomed sex is hardly the first one that springs to mind. So why don't we just think of gay people as people like anybody else... who just happen to be gay?
That's my treatise on the matter, and it's too late at night for a proper summation, so there's yer lot. ;-)