I don't know about other people, but for planning for a real SHTF situation I look at food as fuel. It's just calories and vitamins. I just wish peanut butter could have a shelf life of 10 years. It's got a great balance of carbs, protein and fat and it's dense cheap calories.
PBFit is dehydrated peanut butter powder. In the drying process, it removes all the oil, so it lasts longer without going rancid. In Mylar with o2 absorbers it has more than a 10 year shelf life. You reconsitute it with water. It's not bad at all. I use it regularly for baking and put some up in my stores.