If you really want to see how popular reloading is do a search on suppliers of reloading equipment like Midway for an example. They have been in business for decades and have done nothing but grow.
There must be millions of reloading presses sitting in garages, shops and dens around the country gathering dust along with tons of components. I have pounds of gunpowder, thousands of primers, boxes of brass and bullets and haven't reloaded a case in the 15 years since I collected it all. I know several people who have supplies that dwarf my collection and haven't loaded much, if anything, for years. There is enough out there to load trillions of rounds of ammo.
Reloading equipment is going for exorbitant prices on Ebay. But in some cases, that is the only place you can find some of the equipment. Carbide dies are selling on EBAY for double the normal price. Bullets for reloading are non-existant in Oregon.