That's an interesting way to look at it Scott...never occured to me to look at it like that...
I've been using a Dillon 650 - with a case feeder - for several years now when I got back into shooting metallic in a bigger way / semi-retired...
Yes, the 650 with a case feeder...will easily crank out 1,000 rds an hour ...but it does take a little more time to case-gague everything, inspect the finished rounds, box em up ....
I tend to get bored - if I actually load for more than an hour or two ...but with the progressive setup I have...its pretty easy to get 20 - 40 boxes made up ...and then stacked up on the safe for use. I'm not a competition shooter - I just like to shoot / and for calibers that I shoot a lot of ...( like .357 mag ) I will often leave the press set up in that caliber...until I load at least half a case of bullets / which in 158 gr is 2,975 bullets per case so about 30 boxes ...in a half case...and then stack them up for use. Then I break the press down - clean and lube everything - and set up the next caliber I want. When I get down to 10 boxes or so in a caliber like 9mm...I'll crank out 40 boxes or so ...stack it up ...and just go like that.
Yes, I keep 6 primer tubes filled ...before I set down to the press for a loading session / and if one of the grandkids is around to help ...I don't turn them down.
Tonite after dinner, I had a gun to clean because I went to the range today....and my press was setup on .357 mag ...and I cranked out 10 boxes..in about 30 min ...then spent some time checking the rounds and boxing them up vs watching stupid stuff on TV while my wife was busy doing some other stuff. So to me, its more like an hour here and there ...in my shop ( no kids here anymore / so the door to my shop stays closed / things stay where I put them ) ...its easy to go down and load for 30 min or an hour ...not a big deal.
I'd never go back to a single stage, turret - or a non auto indexing progressive / or a progressive without a powder check die installed. I think a good progressive with a powder check die - just gives me the extra safety factor I want in my ammo. LNL, Dillon 650 ...and others have that option ( the Dillon SDB and the 550 do not have it ).
But to me reloading is part of my gun hobby ...so I reload 9mm, .40S&W, .45 acp, .38 spl, .357 mag and .44 mag .....and shotshells in 12ga, 20ga, 28 ga and .410 .... and tomorrow I'll work a few hours ...then head out to shoot 5 or 6 lines of Skeet with a 28ga and .410 .../ get back to my office about 4PM -make sure everything is ok ...
and life just goes on like that ....a little shooting, some reloading, some gun cleaning, a little woodworking, some cycling, --- even a little work --- a few chores around the house.../ help my wife if she needs some help ..../ kids, grankids, ....( even my worst days are pretty good man !).