spittinfevvers, there's a thread in the Feminism section that discusses, in part, what might have caused this man to hate women.
I'll give you my tuppence-worth:
Quite often, it really isn't anything any particular woman has done. In the past, quite often, where there was no wife or girlfriend to blame, the mother was blamed: she was too cold, too smothering, too dominant; too weak. I would say that this was just more - institutional - woman-blaming.
This chap, again, very helpfully, left us a list of reasons. In the main, he said, it was because women wouldn't sleep with him.
Interestingly, that does fit in with a lot of feminist theory (which I believe, actually): men have a deep-rooted belief that they are entitled to a woman to sleep with, to cherish them, to look up to thim, to give them lots of attention. And lots of men are enraged when this doesn't happen for them.
As an aside: My brother in law is like this, actually - to a tee. Seriously. He's charming and nice but ... there is a huge rage in him. He earns 60K and he doesn't have a little wife. He's angry. So, it isn't just men out there that think like this. It really can be the man next to you.
That's just one reason for the hate. There are other suggestions.