HBE. Since the moderator will not allow me to tell you about a book that you really need to read in addition to MWD, you are going to have to do some research.
You are letting your wife walk over you. There is a famous relationship author who has described this situation and some of his ideas fit very well with MWD. I strongly suggest that you follow some of the suggestions that MWD has on 180's and GAL.
From your posts, you are describing yourself as a "nice guy." The Nice Guy syndrome is associate with men who have been raised by women, had mostly teachers as women and who have not had a lot of men as mentors or authority figures.
One of the best ways to combat Nice Guy syndrome is to work hard on GAL (as is recommended by MWD) and use your GAL activities to become a "better man."
You might want to search some of the other and older posts, especially in the Sex Starved Marriage section of this MWD website, where this topic has been discussed in the past.
Good luck to you.
>43 years of marriage--My wife and I are now closer than we have been in decades. I believe that my SSM is over.