...Do I still have what I need despite what I have to give to her for no good reason?" The answer, in my case, as I suspect it is in yours was, "Yes, I am very fortunate." Answer the question and then give yourself a break - stop picking at it.
This brings me back to my original question. Is there a network of men's support groups? I have been unable to find one. And yes, in many ways I am fortunate, and I think it may be difficult for those with less to have sympathy for someone with significant funds. The problem is that although I have plenty of money to live for today, if I retire, at the rate that my assets will be depleted, I will eventually be bankrupt at the current alimony rate. In answer to another person's question earlier, I don't know if a court would give me a reduction when I'm sixty five. The court order said for the rest of my natural life,(and also said that the life insurance policy - which BTW is a term policy that expires in another ten years or so, and I don't know what the replacement cost will be, but I'm sure it will be exhorbitant) but did allow for the possibility of returning to court if she re-marries. This is why it's so difficult to move on, as I'm sure anyone with a lifetime "obligation" whether large or small understands.