I decided a couple weeks ago that old trucks make me happy. They don't need to be in mint condition; in fact, they can be rusty or dented up and scratched & they're just as good. Unlike new trucks, I don't mind seeing the flare-side or a short bed on the older ones. I think it's cool if they sound great as they go by or if they just barely seem to make it, chugging along.
Maybe this stems from my first set of wheels, an older F150. Old trucks might evoke emotions otherwise buried beneath the surface of current issues in my head. Sometimes I want to drive them, but usually it's alright just to check them out. Parked or moving. Old trucks make me happy.