Is having serial monogamous sex the legalized and socially acceptable fix in lieu of drugs ?

PREMISE
To get a high, there is a legal consequence with drug abuse, commitment in marital agreement and avoiding the use of prostitutes for fear of sexually transmitted diseases.

Serial monogamous sex has the attraction of fewer legal and social implications today that makes it palatable to the conniving traditional elders and an easy excuse for the masses.

QUESTION
Morally, short of repenting (non-religious aspect) to claim faithfulness and commitment upon marriage, would not persons of this disposition be equivalent to cheating oneself, living a lie, and therefore be likely to be unfaithful based on the saying a tiger cannot change its stripes ?
If you disagree, how so ?


Serious non-academic answers in the above categorical context please. No personal implications here.
Please go ahead to alter the premise as you deem fit.

Question posted: United States.

No, it's not. The Christian Taliban would just as soon have you tarred and feathered for having premarital sex (or for that matter, any sex outside of marriage) as for taking drugs.

Neither the kids themselves nor the country as a whole benefit when they're told to "keep it in their pants" in lieu of proper sex ed.