[1] https://money.cnn.com/retirement/guide/pensions_basics.money...
[1] https://money.cnn.com/retirement/guide/pensions_basics.money...
For a higher rate taxpayer you put in £60 and get £100 in your pension.
You can also do salary sacrifice and reduce you income tax and NI lability
It's quite likely that some people today will end up paying higher income tax rates in retirement than today.
And you can use drawdown to manage your income from the pension and you would of course make use of income from your ISA.
SIPPs are beyond my lifestyle.
You seem to be arguing that saving for retirement is futile. You can invest is (almost) arbitrarily low risk to principal investments like US treasuries. I probably wouldn't advise that as the sole investment strategy for most people. But it is one way to reduce certain types of risk. (And most defined benefit plans have the same risk with respect to inflation.)