My big brother was a medical student at Glasgow Uni, Mum never knew who, or how many folks, were invited for dinner.
It's easy nowadays to buy and store food, anytime, any season, any variety; it wasn't then.
Modern houses may well have had pantries, but they weren't as cold as those built underground or with running water in them, freezers were tiny wee things that kept a half dozen ice lollies at the top of the fridge, not entire meals.
Tinned chicken, ham, salmon were just in case standbys.
Pasta ? well that was spagetti or macaroni, wasn't it ?......only fit for childen's lunch, not dinner.
Rice was for puddings, maybe kedgeree, or occasionally folk might *try* a mild curry.
And dinner was always at least three courses, especially if there were guests.
No microwaves, so no quick cook food.
Remember too that there weren't the huge chicken batteries either, chicken was expensive, when the butcher had them in.
If Mum bought fresh it was usually a capon.........more meat, and better flavoured it was believed.
I think we had more rabbit than chicken tbh. until the myxie took them.
Different times, and these tinned chickens were part of it.
I think Eric's right though, might be useful for camping so long as you don't have to lug it very far. Soup or stew and roast chicken too
cheers,
Toddy