You are probably right that nobody played the game for the render quality. However, I would say that some of the models are pretty unique, which at least helped me start this despite the banner on this indeed not looking that inviting. But people here enjoyed the writing a lot, the humor that was already mentioned, but since you're talking about sex scenes as well, they are way better than most of the stuff you will find on here, not always resorting to the same clichés, having a decent flow. Even though spelling and grammar also are terrible at times.
This game has tons of flaws, not least that it is abandoned, but also others, and nobody will deny that. But it does have a unique high quality writing. If you're not as interested in that as in graphics (or application of kinks), or if you don't connect with the writing in the first place, I can easily see your resentment.