/adv/ I'm confused.

I told my girlfriend that I'm quitting porn and masturbation and she's unhappy with that.

Thing is, while porn is a good quick release, it also creates desires my girlfriend cannot live up to and will not consider.
So I thought it'd be a good idea to limit my sexual desires strictly to my girlfriend and what she likes to do.

I told her this and she said this would destroy our sex life, but I don't get how.

Wouldn't it be ideal to have a partner that only wants to have sex when you do, and then only desires your favorites?

What is so wrong with this?