It really seems to me that devoloping these games are bad for your health. So many fizzle out for that reason. Even making mods for these games seems risky with the number disapearing suddenly with illnesses. Still I always feel good when a golden oldie gets updated.
It's more that it's a lotta blood sweat and tears to produce something that most people will refuse to consume, many will make moral judgements against you for merely being associated with, and for which many of your fans are drooling idiots who can barely form a coherent sentence, let alone say anything other than, "more."
And then those same 'fans' will infer you only care about money when you're piss broke and working a full time job on top of your hobby project which you know they're not paying a penny towards because for whatever reason people get suuuuper defensive when you tell them they should pay for porn.
You r-e-e-e-e-a-a-l-l-y gotta like the process to actually make a porn game because no matter what your skill set it, you could probably make better money else where. Hell, even within the realm of porn games abandoning mainstream fetishes in favor of the furry collective makes more financial sense. Fek (look him up on Patreon) makes six figures a year and he just makes furry fetish games.