If I can get my hands on something, I'd definitely CTB. I don't enjoy the idea of an accidental death, because I feel like I would panic and it wouldn't be something that I get to control. The whole point of CTB-ing for me is that I'd like to have some control over how I leave this world, since I didn't get any say over being put into it.
Accidental death would mean that everything would happen all at once and I wouldn't really have the chance to have any say over it: I wouldn't be able to tell the people I love that I love them, I wouldn't be able to leave my things exactly where I want them, etc. I guess natural death falls under the same category, but I'd be okay with it because natural causes tend to be a little slower than accidental causes, and so I'd still have some time to plan and re-organize.
But, if I make it past college graduation, then I'd probably stop seriously considering CTB-ing; it really depends how the rest of my life plays out.