BF- The big differences I see between your military experience as outlined in your original post and most folks' personal defense gear are:
A) Your gear was bought by someone else. If someone wanted to purchase my mags for me- I'd take all I could get and schuck em after a single use rather than retrieving and packing empty mags with me.
B) Quality Control. While your mags were from the lowest bidder, they were held to mil-spec standards which seemed to escape most commerically manufactured mags. It's not that you have a magazine, it's whether that magazine was held to any particular standard. It would seem to me that commercial mags use the wording, "Designed to fit Colt AR15 type rifles". Rather than "Designed to
WORK in Colt AR15 type rifles". Even with designing them to fit a particular rifle, they missed the mark...
C) Personnel. I'd love to have someone loading my new mags w/ new ammo and if ever a hiccup occured, dump the mag and move on knowing that someone would be by to resupply me. (If all things go well)
D) Supply. Near limitless as long as our military personnel needed mags Uncle Sam was obliged to send them. It was never an issue if there was going to be mags, just who was going to win the contract to supply them and how long to deliver to the field. One way or the other, they would be available.
As the supply can be disrupted for personal use, via a ban, it's just good practice to make sure the mags we're buying are top notch and will provide years of reliable service. Since funding is pretty much a universal issue- to have all new mags loaded up for single use is just not feasible for most. Since I load my mags & stripper clips, I can find the time to identify any issues and correct or replace the mags as required.
If I'm reading you right though, you point is spot on... We can get em' now, for a good price. Might as well be snatching up lots of mags so when they're needed most- it's not an issue if the mag is in good shape, readily available or necessary to recover after use. For the most part, I'm trying to do just that.
The biggest issue here is to purchase quality mags from the get-go.
Sly