Contemplating upgrades in a post SHTF world isn’t necessarily planning to steal. Every player of a first person shooter knows the drill: loot the bodies, take all the ammo, keep the best guns. Once you’ve killed a bad guy the supplies are just sitting there, no stealing necessary.
There was a nuance I was responding to. It’s one thing to take reasonable advantage of the outcome of a bad situation; it’s another to plan “I’m not going to get what I need by peaceful means now because I’ll just take it, by any means necessary, from someone else later.”