Right, but it's also not responsible to portray AIDS as something that regularly kills straight people in the West (except for black chicks). Should you wear a jimmy hat when you're porking that bar fly? Of course. If you don't should you worry you got the HIV? No.
Well I wouldn't say that. Big groups of infected people in the US are Gays and IVDAs. My generalizations are more of a population level type of thing than an individual on a night out thing. You are correct though in saying if you take some care in who you associate with then your chances of getting HIV even without a condom are minuscule. The problem with a random girl at a bar is she may be an IVDA or have a bisexual boyfriend. The chances of that happening if you aren't in the habit of hanging out at scummy bars is definitely much lower.
The problem is that even if the probability is vanishingly low the consequences of it happening are devastating so you kind of don't even want to take that chance. We have been using the terms risk and probability like they are synonyms. They in fact are not. Risk is the probability of something happening multiplied by the negative effect of the outcome. The risk associated with having unprotected sex with a random woman from even a nice bar is high, but the probability of the ultimate bad outcome happening is low.