What you heard on drink cum is bullshit. The rest has logic.
Young guy Matured woman, good for both. Guy gets to learn game of pleasing, woman gets to have your dick with long fuck.
Young girl Matured guy, good for both. Guy gets a tight pussy. Girl gets an experienced fuck.
What two matured can enjoy, they both know what is coming next. And what two immatured can enjoy, they don't know the real fun.
Stay away from illness, ofcourse. A good sex burns fat callory, pumps blood well, that's good exercise, he has to feel good. Woman can use the cum on face, good for skin.