Very true, it's more or less just a sex-sim. And a very easy one too: "Talk about work", "Talk about hobbies", "Become friend", "Confess" and you can H already. All in 2 minutes.
That's why I loved AI-Shoujo so much (played hundreds of hours). That game had purpose, meaning, reason, progress, achievements and even an ending. And you had to progress with the girls in order to H or unlock positions, and they actually changed their character in the way you treated them. And when you got tired of H-ing or gathering/crafting items, you could build and decorate houses for hours in between. To me it's the only REAL game out there.