Yeah, I'm with you. And good writing in porn games is extremely hard to find.
Have you played Westview Academy? It's unfinished, but it's well written, and not completely sex forward. There is a lot of decent text in between the scenes. Come Home is well written. It's currently my favorite. Have you played Desert Stalker? It's pretty sex focused, but the best fallout game ever made. And pure maledom. Pale Carnations is sex focused, but not a bad game, and the story is good. Maledom as well. Cosy cafe was at least pretty well written. It was a kind of heartwarming game. But I think it's more sex forward. And Maids and Maidens is back in development if you have played it before. Not the best writing, but a lot of good girls, and the story isn't bad. It just has some shaky moments.
I can think of some more examples if you need, but those ones come to mind.