The resentment comes from the fact that as the current working generation we're working our arses off to pay for their pensions when the whole system will have collapsed into nothing by the time we reach our (much higher, by the way) pension ages.
While they demand that their shillings from the 1970s somehow translate into being paid thousands per month. And then if they're told they'll get that but have to pay tax on it, they then complain about having to pay tax on it because "I pAiD iNtO ThE sYsTeM." Most women didn't even work full time for their working years, so they're claiming even more in benefits (yes, a pension is a benefit, it's an untaxed handout from the government and it comes from the benefits pot, in fact it's the highest % of the benefits pot) than they ever put in.
They also get endless freebies and discounts.
They are also oblivious to the fact that people are expected to live on much lower benefits with much higher outgoings.
And they're anti-free-school-meals for all, because that would be a waste of money for the parents who can afford to feed their kids, while seemingly wanting to claw on to the pensioner energy payouts which are exactly the same principle.
And that actually, no one has a lot of free time and a lot of money, and they have maximum amount of free time. So no, you would not expect to have a lot of money when you can spend all your time how you like.
My MIL complains she doesn't get enough state pension and is currently on her 7th cruise of the year.
1 in 10 pensioners has assets over a million. Many are sitting in their oversized houses complaining their energy bills are too high oblivious to the fact that their house today is worth 500k-1m and the energy prices reflect that.