That was unsophisticated and naive. Homosexuality is acting against at least social norms. Even today there is a stigma against homosexual behavior. The people who practice it are by virtue of dismissing those norms already displaying a higher moral liberality than most. That would undeniably indicate a more promiscuous attitude whether the acts were wrong or right. Another indicator is the famous examples where gay pride events are marked by the most diabolical displays of flaunting any moral decency. The thumb their nose and flaunt the fact more than any group I know. They literally hate anyone who suggests their actions are immoral. I am sure there are very morally upstanding homosexuals but they have a disproportionate number of individuals which literally want to violate social moral norms.
I think here is where I find the center of your argument: they're violating social norms. I won't directly respond to the rest of your post because if you have taken classes in statistics and stats, with degrees, then I will trust you know more what you're talking about than I do in such matters, and we can instead focus here.
In other words, you don't like them because they're living a lifestyle different from yours. To which I say: so what? That has nothing to do with morality. That's simply you being uncomfortable with what they're doing. Here's a secret, I go against social norms all the time, because, seriously, screw society. It rejected me when I was young, so I rejected it right back. But I'm not gay. Screw ties, screw fancy-pants... uh, pants, I'm not interested in sports, I don't drive out of choice, I'm not interested in cleanliness for the sake of showing off, I have a huge beard, I play Dungeons and Dragons... am I automatically immoral for these, too?
Here's the thing: the actual number of homosexuals in proportion to heterosexuals is small. In our culture, men are encouraged to be sexually active while women sexually passive. It's more likely, then, that homosexual men are going to be more sexually active than heterosexual men. This is further encouraged by the fact that they tend to be rejected by society, and have only each other to go to. Once again, our culture is to blame for this dangerous behavior. The solution, therefore, is to educate on the dangers of promiscuity with good sex education, and in accepting homosexuals. Homosexuality itself is not the cause. That flaunting in gay pride parades is sending a message:
we are who we are, and we're here to stay, so deal with it. Don't like it? Too bad.
As for sources, Ken said that there was stuff on the CDC. If you have that, show me that, because I trust what they have to say.