I've been mugged a couple of times and learned my lesson (well, technically, I've only been mugged in company of careless people - I have too good a 'safety sense' myself, having grown up in rather dangerous neighbourhoods); in fact sometimes I'm glad that I'm never armed, or in certain situations I've been I could have acted more extremely than I should have.
I wish I had a blackbelt too, that'd solve all my problems