You guys are going about this ALLLLLL wrong... Disclaimer: Like anatomy books, each individual is still arranged uniquely... it's just the average. The same goes for the following statement.
The wives "do" the sex because they feel it's their duty, Correct? Well, that isn't great for MOST men. The idea is that all women have to do is show up has circulated and been joked about for years. However, men wants to be WANTED! Correct? It's not in most people to be excited about fucking a breathing corpse. However, when you are just DOING stuff to get laid, what do you expect from her just laying there so she can get the house vacuumed?
Something has GOT to give. Come ON! Vacuum the house because you love your wife and want her to be happy. If you really search yourself, you will discover new and great things about your relationship.
If that is NOT the case, and she is just DONE, then it is in your court to decide what you want your life to look like in the future. If it is to be monogamous with someone who equally desires you, then you have to weigh that against the pain of divorce. For me, the pain was less than the pain of just staying for the sake of all the amenities of life. I went to BROKE as all hell, but that was better for me to go through than the rest of my life unhappy.
Go for the love, sex happens or you won't be monogamous. Monogamy means sleeping with only one person. However, if you don't even do that, what is it called? NO-nogamy? I've called it 'Roommates' for years.
Vacuum to love. Make love to love. "Let your yes be yes and your no be no." There are too many games.
With providers that I've helped over the years, I've constantly told them to just love people and not do this for the money. If you just focus on being present and loving the person you're with, the money just comes.
If two people love each other but have issues, fix the issues. The rest comes. If it doesn't, you haven't fixed the issues. You also HAVE to accept that you are only in control of the issues YOU can fix. You cannot fix her issues. You just have to make your own decisions about your own life.
TL