"For me, it would have very little to do with the property, or money, or whatever was being taken"
Same here. These people who complain "a few dollars in a cash register isn't worth a human life" are completely missing the point. The Death Row case files are FULL of cases where somebody robbed a convenience store, then shot the clerk before leaving. I think it's pretty much a given that if somebody points a gun and threatens somebody with it, they've passed the point of no return.