Generally keeping my older stuff until parts aren't available any longer.
One of my hobbies is to rebuild/refurbish antique outboards like the Elto Pal and Handitwin.
My family has been boating for over 50 years and we did all of our own work (except the haul out and paint). I maintained Chrysler 440’s and Crusader 350’s (Chevy).
The older outboards (1967 40 hp Evinrude)were so simple to work on. Now the engines are outragous in cost as well as complexity.
We were really into mini-ikes and go-karts. We did some club racing, but mostly just went to the tracks for fun.
My brother and I built a 1929 Model A from the ground up. We had a 4 speed (Saginaw) in it. We made the dash board, gas tank, clutch linkage, grill, and completely boxed the frame. We rebuilt a 327 small block and the car really moved. We got the idea years ago from American Grafitti (John Milner’s car).
My crazy brother then built an airplane (Vans RV-6) that took 5 years, but cruised at over 200. He has since sold it due to the fuel costs.
Those were good times.