Security ... think about it!
Contrast that to what the overall murder rate is in this country, 5.4 murders per 100,000. So, the average CCW holder is (5.4/100,000)/(1/142,000) or 7.668 times less likely to murder someone than your average private citizen. And that's not correcting for the exaggerations pointed out by Sebastian and the conservative numbers used by Waldron (it's actually 34/5,000,000+ or 1/147,059+). So the real number is probably on the order of 10 times less likely.