Actually, for my peace of mind, I DO require a substantial supply of "stuff"...all kinds of stuff.
I get twitchy if my lead-alloy stockpile drops below 1000 pounds, so I watch the available supply quite closely. I'm trying to cut back on the powder types I use, but at last count I still had over thirty different "numbers", mostly in multiples of pounds.
On primers, my NORMAL stock runs around fifteen to twenty thousand of various sorts, and has done for years. I've been increasing that level somewhat as opportunity presents itself. Just yesterday, Urny (in Elko) introduced me to a fascinating shop WAYYY out in the countryside, and they have Winchester primers in most sizes for $22.50 per thousand.....so, I bought three thousand "just because".
I owe nobody any apologies. This is my hobby, and primers are literally the spark-plugs that make my hobby "go". I may not even live to the end of my current supply, given the medical realities, but by gum I WILL be shooting as long as I possibly can. The primers on hand will make that possible.
One marvelous thing about casting our own bullets is the virtually unlimited range of components that are usable with our favorite projectiles. Jacketed bullets are a very expensive proposition if we try to build a reasonable stack of them for future consideration, and they need a fairly-limited range of powder types for good performance. The shop Urny took me to has bulk .308" 168-grain "match" BTHP bullets at $125/500. My M1A munches very happily on cast bullet loads that cost me PENNIES, completely loaded, compared to the 25-cents-per-bullet that most handloaders have to pay IF the bullets can be found.
Independence is a wonderful thing, and that pile of primers in my shop are a large part of that independence.