At least with sexually promiscuous people, they admit they're here for fun. They are in a 'lust mode' and can still turn on the 'love mode' at any time. Serial monogamists who have fling after fling month after month are the worst. They demonstrate an inability to even handle relationships correctly, and end up giving their heart away to 50 different people. This is far worse and far more insidious than the innocent fun having of young adults. I would rather date a former 'slut' with a body count of 50 than a 'monogamist' who had 'dated' 50 times. With the 'slut', who can effectively separate lust from love, I will be one of a few serious relationships so there is a possibility of it lasting. The previous sleeping around wasn't serious. With the 'monogamist' I will literally be Relationship #51, and there is no way it's lasting.

P.S. I do not slut shame or discriminate based on body count alone.