Absolutely agreed on everything you said. Unfortunately, as your signature attests, DPC thinks he's running a business, and so on a cost-benefit analysis putting anything in the story that even remotely sniffs of cheating or NTR or whatever would hurt his bottom dollar, so he just won't. No matter how realistic it would be, or beneficial or interesting to the story or whatever, it's never going to happen because those sweet patreon bux would drop by a couple hundred a month and we can't have that.
My three favorite characters right now are Quinn, Lily and Nicole, all three of which would realistically be fucking other guys on the regular because of their work and other proclivities, but that will never ever in a thousand years come up in the game except as a vague implication or an implication from context. As a result, we're not getting - and won't ever get - the full stories of these characters, and nor will we see the full potential of their character growth and the MC's character growth without them going through the realistic challenges of these kinds of relationships with strippers and hookers and drug dealers. It's a shame but I've made my peace with it, like I have with pretty much every other piece of modern fiction that comes out that is either self-censored or actively censored to appeal to a certain subset of loud people who can't handle reality even in story form. If I ever make one of these games, and I'm seriously considering carving out a piece of my day to start trying now that hardware prices are falling, I won't be pulling any punches on that kind of shit, I really don't see how anyone who considers themself a writer could. Money is a hell of a drug I guess