You are like talking to a bag of hammers. DQ has told you what to do. So have many others. Here I will give you the words again. Print this out and read it to your wife.
"I will not continue to live in a sexless marriage. What are we going to do about that."
Your next actions depend on her response.
You two can agree to: 1) divorce so you can have sex with other women. 2) remain married for appearences and you get sex on the side, but not in the marriage. 3) actively schedule and have sex X number of times per week with your wife.
I would opt for number 3.
I'm a man . . . But I can change . . . If I have to . . . I guess . . .