Ty, You have had a lot of advice from different posters. But that is all it can ever be - advice. You are the one actually in this situation, and the one that has to decide on how to move forward.
It sounds like you have been doing a lot of thinking and are now acting on your conclusions. Good. The only thing I would remind you is that you should be acting free of any expectation that your wife is going to "come to her senses". She may do, she may not. Even if she does, you may still decide that you have no future together. You must be prepared to deal with whatever scenario unfolds. Keep us posted.
Best of luck.
Strong&Alive
"A man can be destroyed but not defeated" - from The Old Man and the Sea, by Ernest Hemingway.
Which I take to mean that every man has within him a spirit of relentlessness and optimism. Its already there; he just has to cultivate it.