Just a question, in the past before i started to reboot, i used to masturbate to porn with a vigorous up and down motion to reach orgasm quickly like in 3 minutes. After like 4 to 5 years of this, as shared by my previous story, there was suddenly one day i could not erect no matter how i masturbate to porn or without porn. Could this be due to the vigorous grip that i could not masturbate to without porn? Anyway this all takes place before my reboot. just wanna clarify whether the vigorous grip has desensitized me. But surprisingly i could still get random erections occasionally and good erections when with my girlfriend but not with stroking or touching the penis.