You are not the asshole. Maybe you could've been slightly more polite about it, but that's honestly looking for a nitpick.
Assuming good faith, some people will need to be educated about these things before it becomes normal and comfortable for them, and unfortunately that education will be up to you more often than you'd like.
Even if it isn't an outright cure for HIV, the progression to AIDS was linked to a compromised immune system, so this could possibly prevent the leap from ever happening.
Not necessarily. Sales taxes, payroll taxes, and income taxes are all paid by people who are living somewhere while not being an immigrant with a visa or the like.
Yeah, anything that has you speaking in game jargon in public should qualify.
One of my friends at a pizza place a few years ago: "I can't believe I didn't get to poison anyone last night."
Me: "Dude, context! We are in public!"