I used to when I was young, no time or space. I started a model railroad a few years ago....cut that down to fit under a desk so it was out of the way but still accessible, still haven't touched it this year.
When I was younger I had a "holy grail" model in the 1970's, Bad Medicine hot rod model which I saw once in store, then twice put together in the early eighties. Santa never brought it for Christmas even though I asked for years. A few years ago I saw that they reissued it so I grabbed it...still haven't put the glue to it.
I looked into maybe doing a ship in a bottle someday, there are some really crafty people doing those.