I have no regrets about my life. People ask, "If you had to do it all over again, would you do it differently?" No. That's speculation.
That to me is a bunch of crap trying to shoot guys up into damned space. What they're going to do is they're going to wipe out half a dozen people one of these days, and that will be the end of it.
Unfortunately, many people do not consider fun an important item on their daily agenda. For me, that was always a high priority in whatever I was doing.
Rules are made for people who aren't willing to make up their own.