Hell yes you take everything of use from an abandoned or house of the dead if you do not someone else will. That is scavenging not looting as pointed out earlier which is a vital skill that no survivalist should ever consider themselves “above”. The real danger is people who have the skills to be tactically dangerous such as former Soldiers, Marines and mercenaries that may not hold the same moral grounding as the fine folks here on FR. The last time I was at the local gun store there was a couple of people buying only guns and ammo and blatantly mouthing off they have no plans on prepping food stores “if the shit does down they are going take from those who do have them” no quarter will be given to such men it is the noose if they are lucky.
One large cache of prep is a bad idea, multiple smaller spider holes scattered over an defensible area is better should one location be compromised alternatives are available. Remember clear fields of fire, Cover not just concealment, and a route of evac should there be a need for a tactical retreat.
Careful with those presumptions there......