I agree with you in theory, Houseplanter, we pay contributions so that we get a decent contribution from the state on retirement and it is a good amount. However, it is not enough to actually live on, pay bills, repairs, etc. it is meant to give support but not keep us solely, which is why other benefits are available.
There are those who never made enough money to be able to put much by. I'm sure most people tried.
In the past a lot of women only worked part time when they were bringing up children, some not at all (my mother didn't), and depended on their husbands. If husbands didn't have a very good job they faced a frugal old age.
I am fortunate that I have a small pension from my work and have inherited my husband's pension which, combined with state pension, means I am OK. I will never be wealthy, we certainly didn't save much, but I am content - and thankful. However that doesn't mean I'm complacent and I do feel sympathy for others who live from hand to mouth, it could have been me. I certainly wasn't always wise with money and rather lived for the moment. We were very hard up for quite a long period when younger, it was awful but we learned from it.
We cannot judge somebody else when it comes to finances.