I think what happened is that since condoms became such an acceptable norm during the HIV crisis, while we use condoms, that sex without condoms is considered a fetish or sex outside of the norm, rather than regular sex, or regular anal sex, which is what it used to be. No one used condoms, or very few people. With the advent of HIV and teaching of safe sex, virtually everyone was using condoms. Many you men, with the advent of the HIV drug cocktail, have this perception that zero viral load equals no risk for transmission. It's saying if you do something, something bad will happen to you.
People get tired of the message, like eating, and the whole diet revolution.
What we've seen is with people that try to diet, they often have many factors, but one factor is that people get tired of eating bland, untasty food, and so what they will often do is just indulge and go back to the old behavior, and not worry about what's happening in the moment. The other problem is that the long-term consequences with things like getting fat, or HIV and AIDS, don't happen in the moment. I think a good way to look at this is a term called pleasure principle revenge. Recreational drugs are the biggest deterrent to safe sex. You don't think about putting the condom on when you're coked out of your mind.