Your list of problems with your husband is rather long. With 38 years of marriage that is understandable.
Your marriage were doomed when your husband decided to go to Hawaii with George. I know your friends and family told you there was a problem but you ignored them.
Fortunately you are financially secure. That's a big plus at your age. You miss him but not the lack of respect that you had with him.
Your decision to leave wasn't without a high cost. You will get to see if it was worth it. Either way your life has changed you can't go back only forward.