Bro i do believe and think the post nut affects more people with a more turbulent relationship with masturbation and porn. Well, if we are talking about masturbation that is.
If we feel miserable after it most probably are internalizing things like:
- "The fuck i am doing with my life".
- "Will i be like this forever?".
- The whole negative stigma with masturbation and pornography.
I think it would only go away when the person gets confident about their sexuality, when they really believe and think like "I am doing this because it arouses me, i am 100% capable of finding sexual satisfaction in any form if i seek so".
Or the short version, as people would say: "What zero bitches does to a mf".
60% of the time it's always the reason.
The only way to improve is to put work in it. Good luck with your life mate.