I still occasionally ride the bike my dad gave me from the late 70s or early 80s. An All-Pro 10-speed.
I swapped out the old hard plastic grips for some nice new foam handlebar tape, and adjusted it to fit me better. It rides pretty nicely, but I only take it out occasionally because my Giant Kronos is a much faster and smoother ride. This bike is fixing for a good overhaul of the bearings, new tires, and a better seat and it'll be smooth as day one.