Wow! How to aurgue a case for sex with a lawyer! Tough one! I think maybe you need to give your wife another book to read. Michel's book does not touch it deeply enough, the deeply ingrained sexuality in men, it literally is part of their SOUL. Have your read "Secrets about Men Every Woman Should Know" ? Yea, I know it is written for the women, but I have read it and I consider this the perfect "OWNERS MANUAL" for me. It probably explains best the TRUE importance of male sexuality to a woman. I am guessing that most women have a REAL hard time comprehending male sexuality. They see sexuality as an ACT while to men it is their DEEPEST EMOTION. Connecting sexually to a man is similar to a women connecting with communication. Here is a link to the book at amazon:
Maybe you should read the one for men to understand women as well.
Dr. Laura's book, which I have not read yet, would also probably be a good source.
I see you also have a problem similar to mine, the wife sees it is your problem, not a COUPLES problem. Until she sees it as a problem you BOTH share, not much will happen.