What do you mean by that statement?
It sounds like your saying, "I have not planned ahead, I have no supplies. So I plan on killing and taking what I need."
Is this your plan??
Unfortunately it doesn't matter how he answers that question.
Even if we misunderstood his meaning, (I say WE because I take what he said the same way you did.) there are many out there with that idea.
They have their uber-tactical <insert rifle of the day here> and some ammo. They plan on raiding, pillaging, and stealing whatever they can. They will continue this way until they run up against someone that is better prepared, or luckier than they are.
Hopefully it happens quickly, (meeting their maker) but unfortunately they will probably take advantage of a few before they meet their maker.