What's not different about those 2 things is that the individual had no choice in either. We can debate all day about why they're born that way; if the wiring is screwed up or if there's something abnormal about their brain, but there is no arguing that individuals are born the way they're born.
It's really pretty simple to arrive at that conclusion. When you were a kid did somebody have to teach you to get an erection when you found dad's Playboy stash, or did that just come naturally?
Then there you go; you were wired to find the opposite sex appealing... homosexuals don't, and they never had a choice in the matter.
So the bottom line really is, we as individuals have the only choice; be intolerant of folks who are different from us through no fault of their own, or if you consider homosexuality an affliction, be more like the example most of us claim to follow (Jesus), who embraced all men regardless of affliction.