Straight roller coasters have always been pretty boring to me even when I was a teenager. Not that they aren't fun to an extent, but I always preferred something heavily themed -- something like Pirates of the Caribbean was always a lot more fun than any roller coaster for me.
Now intense coasters give me motion sickness, so it's a good thing I never really cared about them in the first place because I don't feel like I'm missing out!
It's the reason Disney, and to a lesser extent Universal (although I think the original version of Universal Studios Florida had much better attractions than what's at USF now) are the only US parks that ever interested me. There's a Six Flags less than 30 minutes from my front door and there's absolutely nothing there I care about riding.