@CGM I don't actually disagree with a lot of what you said there, but I don't think that's what
@Tim was getting at (correct me if I am wrong, of course). I enjoyed the factoid about the white elephant elephant house.
He was merely stating that you could potentially end up with a situation whereby for whatever reason, you couldn't operate the Grand National, but that its listed status would mean that you would have to retain the structure. In
those circumstances, I
would support its demolition. There comes a time where everything has its day - especially when it's something that has to function.
Take Rocket, for example, hugely important locomotive in the development of the railways. When you're done with it, you can stick it on a pedestal at the Science Museum - you don't keep it running on the main line for centuries. Then, some guy somewhere builds a replica - it's much harder to do that with a roller coaster.
Amusement parks aren't museums, I am a big fan of historic rides but I don't have that knee-jerk response to preservation that is common in enthusiast circles. Turtle Chase & The Whip were both closed and removed because they were to impede progress, either by space and/or budget, but they both had huge historic value - you have to cut somewhere. If you didn't, you would be weaving the Mack Looper around twenty coasters and the Hotchkiss Bicycle Railway.
I take the view that I was lucky to ride various things that have come and gone, whether it be Southport's Cyclone, Morecambe's Tornado, Rhyl Water Chute etc etc - but, I wasn't around to ride the Belle Vue Bobs. Carrying on that train of thought, my kids will be around to ride stuff that was built when I am dead.
I understand the sentimentality, but you have to be pragmatic.