NI is something like 10% up to £40,000 then 1% after that.

i.e. not very much. Like on £100,000, top 1%, you pay £5,879 in NI

The state pensions is higher than that per year. Plus free health care.

So how you feel you're paying 'a lot' when you can get full treatment for cancer, for free, boggles my mind.