>>662683The walls may repel physical attack for a great while. A less equipped attacker may have trouble penetrating them. Eventually though, they will fall, or the blockade, or isolation will doom the besieged. In every case, one who sits behind walls, has chosen their coffin, no matter how elaborate.
also, Where one finds a "prepper" or someone sitting on a desireable hoard, if the attack of such a defended position was too costly in life or supply, one would simply aim to destroy or deny the besieged from utilizing their goods, merely out of spite.
A virtual guarantee you will always find more of whatever it is someone had. If this person cost you time, money, life or resource in some kind of stand-off or siege, it would likely boil down into simple revenge, where the attacker "flips the game board over" and burns the homestead or land around it down, the old "fling the plague corpse" so to speak.