I have been brewing for over 6 years and love it. I have made all types of beer and even mead. If I were to pick an easier alcohol of the two for SHTF I would choose mead. Honey is easier to store, don't need hops and all you really need is water/honey/yeast.
Storing hops is generally not a good idea. They lose a lot of potency very quickly. Air tight containers will help and freezing them will help also...but generally not a good idea to store them long term.
If I could I would grow my own hops, however my climate doesn't really allow that.
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both."