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If you're travelling in the mountains (read: snow) for days, and needing to boil your own water, i.e. ski mountaineering, MREs are a ton of extra weight with no real advantages, not to mention you have to continue carrying a bunch of packaging trash afterwards. Freeze dried meals like mountain house are going to be less than half the weight. Having to carry all that water around is a stupid idea if you're already surrounded by water (snow).
MRE's are fine for car camping and casual hiking, but if you're actually trying to save weight, freeze dried is the way to go. Plus, freeze drying is an effective method of preservation, meaning they're not loaded with preservatives like MREs. Also, this MRE shill guy is pulling out of his ass this stuff about freeze dried food having "anhydrous characteristics" after being rehydrated. Shit doesn't make any sense.
Bottom line is, MREs might be worth if if you're in a desert environment, but if there is water all around you, such as in the cascades or rockies, there's no point in carrying all that water for the entire journey. Just carry the solids (fat, carbs, proteins) and save some weight.
MREs make about as much sense as your heavy cotton Carhart there, OP.
