I have asked my wife before what would I could do that would cause her to desire me, and she had no answer. Should I act more masculine, you bet. Will that fix the problem, no. She thinks she has already "fixed" the problem. SHe told me once years ago that she really just has no physical need for sex, but she knows it is important to me, and she is willing to have it. But my need is NOT for sex, my need is for all the things that RESULT from the desire for sex. People that desire sex behave COMPLETELY different from those that DON't desire. And as Dr. Laura has said , there is ONE thing that a woman must NEVER, EVER say, and that is that they don't desire their husbands. Once you say that, it is virtually impossible to recover from.
As for leaving her, I think that if I can stay until the children are grown, that my chances of leaving her are about 95%. At least whil I am still here, that is some motivation to work the situation.