Earlier quoted context omitted.
Have you considered that those who prefer monogamy and those who prefer sleeping around / being a "slut" simply have different personalities? Just because your monogamous friends are happy and fulfilled doesn't mean your slutty friends would be happy if they lived the same way. Humans are varied.
Of course, I'm only speaking from my own experience, but I've seen what's being described here in real life. There are big winners and big losers. Talking to my Tindersex-addicted friend about his behavior - which has been very destructive to his own life - he believes that it comes from a place of trauma as a coping mechanism, not simply a lifestyle preference. In a similar vein, many women I know who only had uncom…
Note that these same friends also have stable, fulfilling (non-monongamous) relationships in their lives.
I think that's why I bristle when I see people equating slutty behaviour with lack of fulfillment or trauma. I think that sex absolutely can be an unhealthy coping mechanism; but so can alcohol, yet many people manage to use alcohol in a fun and safe way.
I think that presenting commitment and sluttiness as the only two options is harmful, and it keeps people in destructive sexual patterns because they don't think they can have broad sexual exploration at the same time as serious relationships, so they avoid relationships altogether. It takes a lot of work, but you can have both! And I think that the more we become comfortable with that as a society, the healthier we will be.