The thread has been moving very quickly tonight, but...
Maybe I'm hopelessly naive/nice, but I think some men who just want sex pull away before sleeping repeatedly with same person because they know it is difficult to stop emotions getting involved and don't want to hurt someone? It is possible for someone to not think enough of someone to want them to turn into a relationship and still think enough to fancy them and not want to hurt them. Isn't it?!
Watch snap on "I don't have a problem getting a date, I just have a problem with them being interesting, fun, a spark, no fleece and interested in me". I've had about 20 dates in 5 months of OD. Only a couple I've been anything more than "meh" about, and they weren't anymore than "meh" about me.
However, I'll put my hands up and say I'm part of them problem as I've developed a smash and grab approach and probably should have seen if anything more stood a chance with some of them. But I'm basically shallow and waiting for someone hot and shortsighted.
On the sex thing, I do have male friends who admit that if a woman sleeps with them very quickly they don't view her as girlfriend material. It's possible that these friends are all misogynistic arses (or would change their mind if the right woman put out immediately).
And on a controversial point, I'm noticing that 33 seems to be the tipping point that some men start to display more overt issues.