If a man wants to have sx but doesn't want a relationship after, he's called trash and has his entire personality bashed. The biological male reproductive strategy for MANY men (so I don't require you to comment your objection if this doesn't align with what you want) is to have sx often with ideally multiple people.

I think it's super funny how male preferences are demonized (by both women and white knight-y men) but female preferences tend to just be the socially acceptable, "mature" norm in society. Wanting a man to be your financial slave is considered good and just.