Space Mountain used to be one the things I just had to ride every time we went to Disney World. Indeed, I rode it the last time I went, which was two years ago. However, I've moved it over to my I don't care if I ride it again unless it's renovated, or unless my stepson begs me to ride it with him. The reason why is that it's just too jerky and jarring for me, and I had a headache for the rest of the day after I rode it the last time. I'm only 35, so I'm not someone who has no business being on roller coasters, and normally I really enjoy them. However, unless they renovate it and smooth it out somewhat, I may not ride it much more again, if at all. There are plenty of other rides at Disney.