OK, I can't take the time at work today to go through all 5 pages, so I'll post after reading 2, and ask forgiveness if the points I make have already been made...

1st: Dude, bail on her. Seriously. If it's as bad as you describe and you have nothing in common, get out. It's so much better to live in peace by yourself than to live in discord. If she's not wife material for you she's not worth the emotional investment, and having easy access to genitalia isn't a good enough excuse (in my book) to ameliorate all the negative that comes with it.

2nd: If she IS someone you want to be with, keep things in perspective. If the good outweighs the bad, that's probably why you want to be with her, so remember during the bad that the good is better. There are times I think my wife is crazier than a **** fight in a monkey house, but there are times that she thinks I'm the same way. And sometimes it's my fault she gets like that, too. BUT, after 17 years of marriage, I wouldn't trade her for any woman or any thing you could put in front of me. I married far above my station and the good is most assuredly greater than the bad. And as time goes on, I've noticed the trend is for it to get better.

3rd: One time when my wife and I were in it pretty hard and I was just really, really, really tired of putting up with it and really, really, really tired of asking her what was wrong and hearing "I don't know" (which sounds like a petulant excuse to my ears instead of a real explanation) I left for a couple of hours, came back, sat down and said that I wasn't going to blame or to judge or anything, but that I couldn't take it anymore. What is wrong and what do you want me to do, if anything? The answer was that sometimes she really doesn't know why, she just knows that she's damn angry or upset. When she gets like that, all she wants is for me to be next to her. Don't talk, don't touch, just be close and available. Simple solution for me, yeah? So what the ladies have said here is really true in my experience. And again, if it's really that bad, just bail. You're not doing yourself or her any favors by sticking around if you're not committed to it going all the way. Neither is she.