U3a - yeah me Marr (in my best Nick Cotton voice) goes to that. Seems to be summat fer anyone.
Pete999 - I'm just a nipper in comparison but had a little time out from work in my mid 30's (plenty of opportunity for Micky taking there). I did some voluntary work over a year or so and it was so far outside my comfort zone it was in another galaxy, I used to evacuate myself before every shift I was so ... Well don't know what the word is.
however.
when I got home to my (now) wife then girlfriend, she has never seen me before or since so alive, passionate in talking about my evenings work, or so buzzing.
so the thing that changed for me was I went back to work, I no longer had the energy left to continue and had to drop it, and it gutted me for years.
but if you can spare the time for a fulfilling subject of your (!) choice be what it may be, I can only suggest from my own in depth study, that you will get one hell of a kick from it.
S.
I worked away from home for a year or so and when I got back volunteered with adults with learning disabilities just for a while...
7 years doing it full time and a few more part time later...
I still give up most of my spare time doing it.. albeit paid.