I do understand what you are saying...but do you realize that we are going off of what you write? You say it's not as bad as we make it seem...we're only interpereting what you write.
Now, like I've said...I'm not telling you what to do, merely giving you observations. I understand you love your W. I know this isn't necessarily an easy thing to do...it's often hard to quantify why you love someone, but would you be able to give us some of the things you do love about her? I'm not saying you don't love her, don't think that...but I do find that sometimes people do things out of habit "I've always loved him/her"....or that they confuse attachment & habit with love.
I can tell you aren't ready to take the step to get out....and I'm not pushing you to do that, just trying to help you get some clarity....in whichever direction it goes.