I used to think the same way as you do, but something in me has changed.
I don't want to sound as if I'm depressed and I have no life, but I'm mentally tired and I do want to settle down and have a best friend. Until then, I'm all open to the idea of having one night stands and the rest, but I don't have the energy to make an effort to get one night stands.
Getting into a relationship for the sake of being in a relationship is very easy, there are a few girls interested in me, one of them texts me every single day and she's got above the average looks but she's too stupid for me. If she had half a brain, I'd be with her.
Also, most women are different than men, they have a biological clock and they all want to settle down and have kids with the right person, so it's very natural to want to settle down.
I have read your previous posts on the subject, I might have even replied to a few of them. I'm not sure where I stand on the social conditioning vs nature argument. The fact is, as it stands, with most of our behaviour, it's impossible to know how much of it is social conditioning or natural. We can't put a group of babies in isolation and observe their development, it just wouldn't be ethical.
On other hand, I do concede that most of our behaviour is learnt behaviour, and I believe it's part of our natural selection or evolution. We are social animals, we live in packs (aka society) and the good of the pack is also for the good of the individual. We also HAVE TO look after our offspring. If we didn't have that nurturing environment for the newborns , we would be going backwards in the evolution chain.
Have you read "Freakonomics"? The author attributes the drop in the US crime rate to the abortion law changes that resulted in less unwanted kids on the streets. I'm not saying "less unwanted kids" is the only reason why the crime rate went down, but the theory kinda makes sense. I'm just trying to emphasise my point here, kids (the humankind) need a stable environment. Unfortunately for men, it's usually women that enforce that nature's instinct, ie they have the final say in who they have sex with.
I'm gonna contradict with myself now, most of the societies in the World are still patriarchal societies and it's not the woman that chooses her future partner, it's the man that chooses who he marries. I believe that in the societies that are more liberal it's more likely that the woman will make the choice.