As a youth, this was a common and inexpensive hobby. My bedroom was lined with models of jets, army vehicles, and ships. I spent a lot of time working on and painting these models and it brought me a great deal of satisfaction. By age 12, I bought a motorcycle and girls became vastly more interesting.
Models seem to be very much a thing today and especially so if you have some money. I doubt I will return to building models as I have so many other interests at this phase in my life.