I do a lot of techy stuff and enjoy the challenge, but I won't do goat trails with actual risk of death. Not worth it now, or ever, for me. I'm talking about the 10-20" wide trails with sheer dropoffs. I've seen them in Colorado, hiked a few, but I'm not talking my MTB (or my enduro dirtbike) on them.

That crosses a line between MTB technical skills and being a thrillseeker, I think.