The thing is, you can’t just say ”how does it feel physically” when it comes to sex, masturbation yes, but not sex.
Masturbation feels like having a sneeze that keeps building up and you just gotta get it out. Instant satisfaction when it happens but 1 minute later you don’t care anymore.
Sex is a different beast entirely (with someone you care about emotionally I should add, otherwise it’s not much different to intense masturbation), the physical satisfaction becomes very much secondary and can even ruin things sometimes. The biggest thing in that situation is the emotional, feeling the other persons entire body touching yours, the intense emotional pleasure of knowing you are causing them physical pleasure, feeling connected as one. Those are the aspects that really make making love a special thing. Cumming is like I mentioned both a bummer because the amazing moment is over but can also be so incredibly intense if you do it together.
That’s just my take though.
It helps me tremendously with language studies, outside of that I have no use for it and do actively detest the unethical possibilities of it