Kinda like mountain skiing just on tracks. I'd go but it does not look very enjoying, does not look scary either, the only things you get to experience are a few relatively steep drops and high speed. I prefer rollercoaster that lets you pull lots of Gs rather then high speed.
Now that I think about it I can't remember the last time I enjoyed a rollercoaster. I go when people invite me but I'm usually just sitting and not really having much fun. This is what goes though my mind: "ok...next...this is nothing special...i'm hungry, what do you mean you can't bring food on the rollercoaster? Lets see if I can spot my car from here".