You seem to be missing the very obvious fact that I already contribute to the NHS through Tax and NI and am happy to do so with the more I earn the more I contribute without the need for another additional tax. I fail to see, however dramatic your tizzy is how that is "sod everyone else".Private health care for myself would be prohibitively expensive, even though I am well paid. So my family should suffer because I happen to have been born with poor genes so you can pay less national insurance, right?
You appear to be confused how the NI system works. My wife, who has contributed to the NHS via NI for many, many years has taken out far less than she has put in. NI contributions go towards funding the NHS and some people will use less than they pay for, some more. That's how the system was designed. Also the more you earn the more NI you pay. If I had been fortunate enough to be born without bad genetics I'd be paying a lot of NI that would be going towards those who need the NHS more than me. I have no issue with that.
Selfishness, that's the problem nowadays. It's all me me me, and sod society or those lesser off.
Do you voluntarily pay more tax and NI than you have to to support people less well off than you or is it all Self, self, self?
I think you need to look a little closer to home for who is confused...