Seriously, all of them. Your ex, your first boy friend, those random bar dudes, that time you got so fucked up you can't remember the evening (I'm just assuming you party, maybe you don't), all of them dudes. All that bareback sex, with those disgusting dudes, creepy. All those BBBJ, they've been in your mouth and you're gonna DFK me? No thanks.
That's why I only see providers that don't drink, and have no kids (seriously, I'm not a motherfucker, that's proof those bitches did bareback).
Actually, I've seen porn stars, and they do bareback all the time. And they don't do bareback with me, but have mentioned that if I desired such a thing, I would need a recent STD panel from a reputable testing agency.
And yes, I hate to see condoms in porn, and I would not like to see condoms in a provider advertisement. Condoms suck, why would that be a good advertisement; that would be like a Ferrari car commercial where they intentionally showed the car going exactly the speed limit, while on the way to pick up groceries, with your kids in car seats in the back. Just reminding me of reality, I'm not interested in that.
I would want to see bareback so that I know she's into it, and that she doesn't run. I hate YMMV, and work hard to reduce the risks of YMMV BS. And that is really an exercise in getting into the provider's history to decide if she's a flaky unprofessional loser or a consistent professional performer. I would watch such a video and pay careful attention to the money shot, to see her reaction, because that is the window into her sexual soul

In fact, now that you mention it, ALL providers should make porn video advertisements. Think of them EXACTLY as compliance tapes, for a job interview.