It's miraculous that the blackpowder guns of the pioneers, or the early smokeless rounds of the soldiers of WWI ever fired!
Yes, things degrade over time, but the first question is how long do you expect to shelve your components before they are all used?
How do the companies who make them, and the stores who sell them, store them?
If you will be using the stuff up in the next 10 years, store it however and wherever its safe and most convenient.
Last year I finished up some Olin296 I bought in the 80's. It had been in my no AC house in southern Cal. a few years, in my basement in PA, in my house in OH, then several years in my garage in OH, where the outside of the can rusted so badly the lid wouldn't tighten, then moved to my attic a few years, and then back in the house. I also had some CCI SP mag primers that had gone through the same journey. Last fall I compared .357 mag loads from those old components to loads with new primers and new W296. The Chrony couldn't tell which was which. Slight difference in the numbers, but nothing out of character for that load.
I don't suggest extreme abuse, but I wouldn't overthink it either.