Women Don't Like Bad Boys. They Like Confident Men, Especially the Nice Ones

A study with the provocative title "Nice guys have more sex than bad boys" makes this larger point.

Women like confident men.  They like the confidence itself, and also like it as a sign of their ability to get resources.  Many women put up with arrogant confident men, and even selfish confident men - bad traits which they sometimes find out about too late.

But women prefer nice confident men the most.  They want the resources, and the sharing of those resources, in the joint project of raising a family.

Sex is part of the project, but not the main point.