Doug - I like your standards.

I should say I run because I can and it is good for my heart (I think?). In a disaster situation, I'd walk, I don't imagine myself running someplace unless it was totally necessary. In a a bad situation, I think running would be imprudent, twisting an ankle on a Saturday morning would be inconvenient, doing it while I'm trying to get away from fire/flood/etc. could be something worse than an inconvenience.