Beta male heart throbs?

Interesting article here about the attraction of the beta male, those less than alpha specimens that we can't help falling for.

I've known for a long time that I'm not attracted to the macho sort, out for saving a woman in distress; frankly I find them rather laughable, and it isn't that I don't often find myself in distress. I just don't see myself as being saved.

But clearly there are women who would never consider going out with anything other than the alpha male. No beta (or omega) types for them.

So what is it that defines the types we go for? How do I differ from the woman who goes for the alpha? Is it a maternal thing -- I want to care, she wants to be cared for? Or a deprivation thing -- I can't be cared for?
Or maybe I just like men who can't tie their own shoe laces.

Who knows?