I hear how you feel about being alone Bill. The W and I moved to a new town almost two years ago and did everything together then I get back to town and she is done. Just remember to keep your head up and your PMA. You have your boys and need to be strong for them. Your dad sounds like a strong man how would he handle a woman treating him like your wife is treating you? I haven't read your whole sit but can't she move out.
Go do something that you can do. Go listen to a local band instead of looking at guitars you can't buy right now. The W and I were going to try to get pregnant one month before she dropped the bomb. I found it hard to watch my niece after that cause I kept thinking of what I should of had. Those times are gone so now I think about how much better my next W will be instead of how things would have been if she didn't hit the crazy train. The biggest regret that I have in this whole mess is that I didn't detach/ move on sooner. Good luck
"Seek first his kingdom and his righteousness, and all these things will be given to you as well" Matthew 6:33
