Now people are getting paid State Pension for decades and it's simply not sustainable.
Exactly this.
My partner has a family member who worked in a factory all their life. Hard shift patterns including nights, hard labour moving boxes. But essentially it is still going, and it's a smidge above national minimum wage.
They started work at 16ish, retired at 52ish with a small private pension to go on top of full state pension - had some savings to tide them over until the "full" pension kicked in (a few years). Has been claiming pension since was eligible, and is now in their mid-90s. Cashed out a massively bumped up house price to buy a little ground floor flat in their 50s. Has more cash in the bank than they are now literally able to spend or even want to, as is in ill health.
It's both great and depressing in many ways. Imagine a national minimum wage person having hundreds of thousands in the bank by their 90s, but being too ill/frail to really be able to enjoy it (I think they're fortunate to still be able to live mostly independantly with daily visits from carers and family members).
But the idea of working for 40 years then having a longer "retirement" than your working life.. this isn't sustainable at all. If you look at what my partner's family member paid into the system vs. what they've got out.. if everyone expected the same, the country would be bankrupt. We're already on our knees as it is.
Too many have taken out for too long. And the rich aren't even beginning to pay their way - and no i'm not talking about a GP on 90k PAYE a year, I'm talking about the wealthy who pay no income tax at all really.