Hey Geek, I have not been here for a while, but your situation sounds familiar. I have done a lot of growing this year and think I have found out at least a little of the secret. It is not wrong to want to have sex with your wife, but it is to do things in order to try to get your wife to want to have sex with you, even if it is the reason she gave you for not having sex with you. It took me a long time and a great deal of banging my head against the wall to figure out that my wife could sense when I was doing things just because and when I was doing them without regard to whether or not it would get me some trim. For close to a year now, I have tried to totally put the sex out of my head, and also stopped keeping a laundry list of the things I have done for her that should get me sex or make her want me more. I am instead doing things that do make her want me more, such as working out, spending time with her sitting in bed reading or talking about some stupid show on tv. Funny thing is this is what I was looking for all along, but only thought it was the sex I was missing out on. I was actully missing out on my wife and the companionship that had been missing all along. Once we got that back, the sex comes more often. She is even the one who comes to me and says, 'Hey, we need to get together tonight'.
God is love, love is blind, Ray Charles is blind......so there.