>>582945> You're forgetting how much air is in a pack of doritos.Sure, but then you're not going to put big pouffy bags of potato chips in vacuum sealed home made MREs and if you go poking holes in Spam or tuna packets, that shit will go rotten and contaminate all the other food.
Otherwise, home made MREs are a good idea, as they have tastier foods that you're used to and it'll be a lot cheaper to put together then military issue MREs or Mountain House type freeze dried foods.