Women are just not necessary anymore. It’s good to have many of them around as friends/partners, but they are not worth the cost they make you pay if you keep them as SO.
We men want sex, and now we can have it in trillion cheap&easy ways.
If you want someone to talk to, men are better company in general.
If you are afraid of being lonely then you have a problem within your mind which only you can resolve, not a women. We all die lonely, a wife cannot change that. You just have to learn to accept and be still happy from within. I recommend meditation, that worked and still works wonders for me.