Back in the '80's when I was in my early 20's I was deeply into HO scale railroading. I would go to local shows and swap meets and was amazed back then how the hobby seemed to be filled with a bunch of old guys. It seemed back then like the hobby was on the way out. Now I'm getting to be one of those "old guys" at the train shows. Even though I've moved from HO to O (can't see those little critters so well these days) it seems like the hobby is still perking along.Perhaps the way in which we do our layouts will change. Perhaps the way we run our trains will change too. If economics don't change we may all be thankfull for an old table with a loop or two of track. Who knows?
One thing I'm confident of is that the 50-60 year old Lionel and Marx trains like I have today will still be operable in 20 years. And will still be making little kids smile as they clickity-clack around their little oval of track and into the hearts of the next generation of train nuts.