Women who paid a lower stamp get a lower pension. That's fair enough, but I understand that many didn't have that made clear to them at the time, which is not fair at all.
On the other hand, people on the old pension could top it up with SERPS, and could inherit their husbands' pensions, so many women, such as my mum (who didn't work for most of her married life but paid as much as possible into SERPS when she did get a job. She did this at about age 48 before retiring at 55 and inheriting my father's pensions at 57) yet has a higher pension income than I do. I am still waiting for a state pension and will have clocked up 50 years of working and paying NI when I finally get it. My occupational pension (which was not free) is taxed, as are my earnings.
I retired in my late 50s as my husband is older than me, and the plan had been that we would retire when I was 60 and he 65. I was able to do that as I'd saved enough to get me through to 60 when I could claim my occupational pension (which is much reduced because of the laws forbidding people without permanent contracts to join occupational pension schemes which were in place when I was younger) but many women are not in that position.
In order to get the full state pension I had to pay 8 years of voluntary contributions - about £6000 I think - as I was contracted out, and although I am still working now (and still paying tax and NI) I don't work every month, so don't clock up full years of contributions, and partial ones count for nothing. If (heaven forbid) my husband died, I would get some of his occupational pension, but his state one will die with him, which was not the case for women on the old pension.
The new pension is only a good deal if compared to those on the old one who didn't pay the full stamp and SERPS contributions, who don't claim from their husbands' pensions and who don't get pension credit. SERPS is no longer a thing, so however much NI you pay your pension is capped at £220 a week, you can't inherit someone else's state pension, and I don't think anyone on the new pension can claim PC. It's not just the few pounds a week that PC brings in but the gateway to so many benefits and allowances that are denied women on the new pension - so it's yet another example of how working and contributing counts against people in the end.
It's a mess. I would absolutely support the differentials if we'd all had a choice about whether to pay W or X amount in return for Y or Z pension, but that wasn't the case. All we can do is what is asked of us at the time, and whereas I don't approve of giving pension contributions to those who choose not to work, it wouldn't be fair to withdraw the payments those subsidies bought, as the claimants were led to expect the state to pay for their pensions, and acted in good faith.
Going forward, I would love to see a proper binding contract, so everyone is told that if they pay £X for Y years they will get Z pension, with a review every five years so they can work out what to do if there is a shortfall. It should also be made clear what will and will not be available to those who opt out of contributing. I don't mean those who are ill or disabled, or those looking after the ill or disabled, but those who choose to stay at home with school age children and expect others to pay for it.