My late father was born well before the NHS. His parents had seven children, only three of whom made it past 14, the others dying from childhood diseases which we regard as trivial today. Why did they die? Because his parents could not afford to pay for health care.
All my parents' children were born under the NHS. They had four. And my mother had at least that many miscarriages. One was born in the first year of the NHS but died a few days later, may she RIP, despite what the Aged P always called the heroic efforts for the doctors and nurses. One was born in 1960 with horrendous health issues. He spent much of his early years in and out of hospital, and his mother had a huge nervous breakdown, and his parents were told he wouldn't make it to 10. Then his father got cancer, a disease which would recur in the father three times in the next 40 - 50 years.
The boy, having seemingly cheated death, then set about trying to do as much physical damage to himself as possible. Always clumsy he was hospitalised several times before secondary school, he was unlucky - the forks on one of his road bikes snapped - and when he took to playing rugby a series of broken bones and concussions and a busted jaw ensued before his playing career ended with a haematoma on the brain. He had children of his own. Both by emergency caesarean during the second of which his wife's heart stopped whilst he was holding the baby. And his children had the usual stiches and dislocations all threated by the NHS. He took up mtb'ing. And the NHS put him back together. And he took up road cycling and commuting. And the NHS put him back together. And the NHS treated and cared for both his parents during their final, messy, nasty illnesses. His wife was an NHS employee, a nurse. His brother-in-law suffered life changing injuries whilst working as a paramedic.
And at no time. EVER, did he or his parents or anyone he knows ever have to hand over any money at the point of treatment. At not time did he or his parents have to think "oh god what is this going to cost and can we afford it?", like his grandparents did, or "Oh God how much credit is on my cards?" or "Is this covered by my insurance."
And now he is typing this. Because without the NHS he'd be dead several times over. Because the NHS has poured literally millions of pounds into his treatments over the years and he has only contributed a tiny sum to it himself. Because folk are bitching because the little shop in the hospital was closed. Because someone with a self-inflicted and probably trivial injury feels like they weren't prioritised properly when they rocked up to get their free at the point of delivery treatment.
His answer to folk who criticise the NHS when their trivial ailments are not dealt with when they want in the manner they want?
The politest version is "Go do one."