I completely get it. I’m 38 years in and still at it. One thing I’ve noticed is that I’m presently coaching kids who were not born until roughly 20 years after I was an assistant coach in our first state title run. I didn’t give a crap about some guy from the 1950’s when I was in high school, so why should they care about my legacy from then? Part of this is simply accepting that you are old and had a good run and it's over. Google “Erikson’s stages: integrity vs despair” if you want to see what I’m talking about.
Right now I have many times the knowledge I did when I was young. I have way better emotional composure. I don’t make mistakes by choosing the wrong battles or being impatient or not seeing the big picture. I’m enormously more patient than I was.
But I also bring far less energy. I wonder if I need to bring more urgency. I've won by far more than my share as a head coach, but I don't want to be the guy who is hanging on and not vital. I don't want to be the guy who the kids roll their eyes at behind his back. I've seen those guys who hang on too long, where new young coaches don't even know how magnificent these guys were in their day. And frankly, that freaks me out. I don't want to be the guy who lacks self awareness.
So dude, congratulate yourself that you are not that guy. You probably got out at the right time. Go find some other dudes like yourself and go to some meets and tell lies to each other about how good you were in back in the day. You are missing the camaraderie I suspect. And I'd consider doing some officiating of some type just to stay around the sport in other ways. That's my 2 cents.