Even if you don't want to make it, I've never been in a supermarket that doesn't offer a fresher option. I've even been in gas stations that offer what they at least claim is fresh potato salad.
Maybe if you really, really wanted potato salad and you were in a food desert but the corner 7-11 has canned potato salad you might buy it, but I've never seen this before in my life.
I don't get it.
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Canned goods are great, they last, keep the nutritional values, packaging can be recycled, etc
The 'they last' means also less trips to the store, and less logistics is good for everyone and everything.
Unless canned food is acidic, then the cans are layered in plastics & are basically plastic bottles with extra steps.
Perhaps there is even an argument to be made how a large scale industrial processing can be (which doesn't man is, but in proper countries it should be) much better, not only precise, but clean, with in some cases inherently far better ingredient quality (at least because of timing the ingredients), and more efficient too. It just takes less to implement an extra precaution or control in such an environment vs a big kitchen (or just someone mixing the ingredients at the store).
Often canned goods use no or at least much less preservatives compared to 'fresh' counterparts, simply bcs they just aren't needed (and either way it's cheaper to perfect the mechanical preservation processes than adding extra stuff in).
Also I really wanna open that can now :).
It's about what's being canned, not the concept of canning.
Yes, I was saying that it seems (imho) a good food to can and have stock at home.
People live different lives, or perhaps even have cooking or mobility limitations.
Or for situations like sailing of the grid where you can't reasonably store potatoes.
I presume potato poisoning from badly made cans isn't a thing for at least a century ... If that's not the case, then I'll store my potatoes as vodka (I know, I know, most vodka isn't potato vodka).