Here's a video my wife took of the layout before I sold it. And I don't think the hobby is dead. As a matter of fact they came out with some new technology that I wish I could have afforded to put into my setup. Wireless, remote control units inside the locomotives. They don't require any electricity going to the rails. You place a computer type board inside the loco.
And FishTaco, my wife was trying to talk me into garden railroading to get me out of the house. Instead, I got back into radio control airplanes.