Sad Songs Say So Much

I had an observation in the car the other day. While listening to Daniel Powter's "Bad Day", I remarked how the sappiest, most whingy songs written are written by men. That may not be true historically (I haven't thought further back than 1990 on this topic) but in modern music, you've got women writing 'empowering' music. Say what you will about the sale of a sexual image but the lyrics of something like Christina Aguilera's "Fighter" or go back to Alanis' "You Oughta Know" - the big hits from women tend to be very strong.

Why is it, then, women have such a reputation for being weak and clingy, and men strong and non-communicative? The music written by men betrays they actually might have feelings. I think it might still be a secret but now I've blown the cover on it. :-/