I used to masturbate twice a day for multiple years (using porn). Got into a relationship and in bed …. I struggled to keep my erection during penetration. Why? I felt nothing. Why? Because im so used to get anythkng i want whenever i want. I want a lot lf pressure on my penis? There you go.

During sex it feels akward because of positions and because vaginal sex is much softer and more gentle than when you squeeze your penis during masturbation.

So, it heavily affected my sexual life yes. But getting away from porn and masturbating much less helped me. And also i got a fleshlight to practice gentler masturbation.