I'm kind of the opposite. My 'gut' feelings tend to rate most things as being dangerous, and I rely on my awareness of actual risk to be able to do pretty much anything.

I don't think I obsess over risk either - but that's maybe because I have been doing this all my life :-). I also don't think my life has not been worth worth living - quite the opposite, or I wouldn't have signed up for Cryonics!