Widening the perspective slightly, it wasn't just that certain food stuffs were rationed, it was that every resource the country had was directed to war work, and that the shipping lanes were blockaded. There was nothing spare - no cardboard for packaging, no wood for furniture, no fabric for clothes, no metal for pots and pans and cutlery and utensils. And that knocked on through industry, so very little other than national loaf, national furniture, the national clothes patterns for example, were produced. No face creams, no cosmetics, no shampoo, etc.
It was the sheer unremitting drudergy of life for most women with children that slowly ground them down. When your clothes washing takes up maybe a full eight hour day (by hand) that you also have to fit in round a twelve hour day in the factory, or on the community allotment, or in the WVS canteen. When you have to queue for two hours a day (no fridges remember) to get food, which may or may not still be available when you get to the head of the queue. Lots of food stuffs weren't rationed but weren't available anyway because we couldn't produce or import them - fish for example was a very rare treat when most of our seaboard coast was mined. And on top of that was the points system for most other goods - not rationed but you only had a certain number of points - that was introduced to stop the wealthy buying up everything else on sight. When you've got no coke, coal or anthracite to fire your boiler and range (no fancy electric systems), having to get it alight and keep it alight. No vacuum cleaner, just a dustpan and brush or a carpet sweeper if you were lucky.
All these things took time, and filled a womans day in a way we rarely think of today. It took hours every day just to wash up, wash clothes, prepare food, keep the house clean, all by hand. To work out how many points, coupons and rations you'd got left and where best to allocate them.
I'm sure most of us could manage on thr relevant food rations for a month, two months etc. But to live our lives entirely the way our mothers and grandmothers had to? Not just for a few months but for 5, 10, 15 years? It was well in to the 1950's before many families had anything spare. That I'm less sure we'd all cope with.