Sounds like you suffer from http://tvtropes.org/pmwiki/pmwiki.php/Main/AllAnimeIsNaughtyTentacles? and dismiss a medium solely based on your own ignorance and preconceptions.maninahat said:*Snip*
Corpse Party
Dangan Ronpa
Phoenix Wright
Katawa Shoujo - Which can be played with censored scenes, but is in fact incredibly tasteful and respectful in how it handles mature themes and the subject matter of living with disabilities.
Saya No Uta - Where the H element is more disturbing than titillating
Steins;Gate
Hatoful Boyfriend
Snatcher
Policenauts
Higurashi: When They Cry.
All visual novels. All more than just "sex" games.
http://tvtropes.org/pmwiki/pmwiki.php/Main/VisualNovel
http://tvtropes.org/pmwiki/pmwiki.php/Main/Utsuge
Of the games that are "sex" games, there's also considerable diversity in what gender the protagonist is and the gender of the characters they aim to woo. Not many genres outside of VNs that are as diverse, even if the subject matter is raunchy and the works partly exploitive (In the same vein as exploitation movies pander to trends and niche appeals).
http://tvtropes.org/pmwiki/pmwiki.php/Main/RomanceGame
Just because most games available on Steam are garbage doesn't mean that the entire genre consist of nothing but garbage.