What you are describing is some of the symptoms of sexual addiction. Some men get
so addicted to
the pleasure and release they get
, that they want it whenever they can. It becomes a type of drug. The escalation that you describe is also a symptom of sexual addiction.
Too much sex can make somone numb. Why do you think porn stars retire after about 5-7 years? Sometimes men think that after a woman has children, she will never want sex again.