I somewhat disagree. I'll bet anything that recreational drug use is rampant in the straight porn industry - yet no epidemic.
Again, what does that tell us?
Senator, this may shock you, but there is no "straight porn industry."
The porn industry is dominated by homo/bi-sexual individuals, but even the straights that are in it die quite young, and usually of immune suppression/opportunistic infection.
You are right that there is no epidemic, but that is also true across the board. - There have not yet been 400,000 AIDS deaths in the western world. The exact number cannot be pinned down, because AIDS deaths where the victim is not HIV-positive are not logged as AIDS for purely political reasons.