The common thread with all of the stories that I have read is that those pilots all had a hard time finding something to give them the same rush or "fix" that that flying and shooting (and being shot at) gave them.
Once you have been conditioned to a way of living, it is diffacult to go back. You have been changed in many ways. It cannot be switched on and off. There is a line you cross and that cannot be undone.
I am not sure I would recommend it to anyone. I have done evrything I can to prevent my son from going down that road. This is not to diminish what others have done and are doing.
I saw a shrink 25 years ago and one of the things he pointed out was my going back to riding a bike was a substitution.
You need hyper awareness at all times to survive in a hostile and deadly environment..
You controlled the machine with your arms and legs, and your body and the machine had to act as one.
You banked sharply on turns, and you were constanly correcting for wind and other conditions.
When you pulled into the Garage and shut down, you had beat the odds and accomplished the mission.