I have heard a couple of different people recommend keeping a "throw away" wallet in your pocket if you should ever get held up. Put some old credit cards, $5-10 and some other stuff in there. Then if you ever get mugged you can hand him the wallet with nothing in it. It keeps you from having to shoot his ass, plus it keeps your identity safe.
I guess if you are planning to end it all you shouldn't care to much about you wallet.