" Frankly, in that situation, I'd simply play the part of the ineffectual urban yuppie and give them my wallet. There's nothing in there that can't be replaced, and I wouldn't be placing lives (both innocent and criminal) in danger. "
And now they know where you live making a second stop likely. ( Gee, he gave up his wallet so easily, might as well take stuff from his home since he won't fight back. )
If no one fights back while being robbed, what prevents the thieves from striking again. . ( and again ) ?