Where I can see why people would like to see old rides saved, I think you have to accept that times do move on, the ride has served its purpose and run the course of it's life. As Robb said, the amount of money required to rehab something like this and keep it running is probably very high, and if it's been sat idle for several years then why not retire it? Unfortunately nostalgia and old rides probably don't sell tickets as much as the more modern thrill/family rides that will appeal to newer generations of visitors.
At the end of the day the park is a business, and they have to do what is in the park's interests. They still have several old rides and obviously intend keeping some of them for quite some time, hence the rehab of the wild mouse and suchlike.
Just because I'm paranoid doesn't mean I'm not being followed.
Xbox Live gamertag: Purplepiiis, it makes sense when you see it on there. Add me if you want to play CoD4, not that I'm that good or anything.