I have eaten some military rations. They can be okay, but nothing to go nuts about. I enjoyed the dehydrated strawberries. They were real, not imitation, but in a texture I would never associate with strawberries, like toast, but crispy all the way through, in a square chunk. The flavor was not diminished, however, and I was surprised by the blast of strawberry in my mouth.
They are not cheap, so economy would not be your reason to have them.
They are a good thing to have on hand in case of emergency, because they do store virtually anywhere.
If you did get some, I would not advise buying enough to stock a bomb shelter. Just maybe enough to last for three to five days.
If they get near the expiration date, and you have not had cause to use them yet, maybe you could have a little fantasy emergency. You could turn out all the lights, have a disaster movie marathon lined up, and make a sort of indoor camp out of it.
Shoot, being a grown up doesn’t mean never ever play again.