I am a 69ner retiree.Actually retrenched with a golden handshake at 58.Like you I average 40 hrs per week.
Ran a machineshop with full compliment of 2 Leblonde Tool Room lathes,Bridgeport Vertical Mill,Okamoto Surface
Grinder,China 12" Shaper,Vertical Keyway Slotter,80 ton bender# and 300 ton Deep Draw Press#.
With the lathe,mill and shaper,I could have done some model engines.
Did think of staying back after work to make own model engines but after a full day it is time to head home
& relax.Today I average 2--3 hours in the morning and another 2 from 4---6pm.Taking my sweet time to do the best cut. Would have been tough to pass time.There is weekend fishing.Life has been kind to me.
My daughter lives in Glenhuntly.
Take care.