Have a kid and get him/her to race - live through their experiences. It is a lot more enjoyable and I think actually good for them. They take crashes better too.

It is very easy to get into things done a lot, and later wonder why you were so into them. I tend to think, like so many USAC racers - if you quit after a year or so, you won't be back. That is more a comment on stat, not you, not an opinion, just most don't come back. As you found there are other things.