Because removing them seems a waste for developers, but rebalancing the game any other way is too much of trouble for the team of three programmers, two of which are also writing/drawing.question...
why are there like 200 skills 90% of them being sexual... when you can only level up until 20. and even before you get killed most of the time as a beginner.
game should have extra skill points for sexual skills. you have no time to spend on sexual skills unless you wanna die
It's been two years since I realized that the game could just give you the skills for flavor text in sex scenes together with perks in sex (Perfect Bottom, Blowjob Expert perks could unlock skills). Perfectly logical and not implemented yet.
What you could do is edit your save and unlock them for yourself to not bother learning them all.