The SG story is one of the best of what AVN writers can offer today.
The graphics in some new games just an half an inch behind Ocean, or maybe even on par - it's a matter of taste. It's a pity that this is an ontopic thread and I can't name other games here.
The best things about SG is the plot, the dialogues, the emotional involvement of the player in what is happening, the cinematic quality and composition of the static images. In fact, this is a movie script with a storyboard. By collecting all the frames of a certain scene in one gif file, you can easily get a short video.
Now if I ignored all of this and just scrolled through the pictures without reading the narrative and immersing myself in the game, then I would probably join your echo chamber and start shouting too "It's been five long years, and there's still no coitus anywhere near."