Sad to see but my overlapping hobby (miniature wargaming) has some cross over and model train stuff is so expensive even compared to miniature wargaming which isn’t very cheap itself.
Over COVID I couldn't wargame with friends in person, so I started an N scale railroad to fill the hobby void as they share a lot. Also it was fun doing all the automation etc as mentioned in other comments there. I've sold the railroad off since as I started wargaming again though.