I know I'm having double standards. But I think most people do. Women really aren't so much different here than man, and this instinct-drivenness does kinda disgust me, eventhough I'm probably not that different. Although I have to say my motivation usually never is "go get laid with as many random girls as possible" but more like "meet a hot & sympathic girl and get as far as possible". This results in a) not much happening but keeping contact -> turns out to be among the 90-whorecent and pretty much waste of time/effort b) really getting laid but still probably nothing gained besides a one-night-stand. So I guess it really just comes down to being lucky and scoring within these 10%. But yeah like you said, a girl who sleeps with you after 2h in a club is probably not the person I'd want to raise my children, because she'd probably do the same, or at least I imagine that, with some other dudes as well.