Used to say to guys at work who were about to retire..
What are you going to do then ?
If they came back with golf and gardening, I gave them a stern talking to and told them to think again.
I retired with the demise of our airline in 2019 at 61. I am busier now than when working. Now flying a PC-12, building my 5th RV - a 10, still coordinating containers - when we can find them

and a myriad of other things.
And I have just done business with Dan to get firewall insulation for our 10....
Way to go all us gray guys !