I'd pay more tax.
The only thing that is holding the NHS together just now is the 'attitude' of staff at the coalface.
Yes, it provides a service.
But not a service int he sense that your, say, hairdresser, provides a service: if the hairdresser does well, has more clients, they make more money and employ more staff.
If the NHS provides a 'service' that has many 'service users'
(I detest that phrase), then it needs more money. Of which there is none, and ever less. It has less staff/theatres/beds that get spread ever thinner.
Tell me, user, which services would you cut for you to have your cataract operation when you decide you want it?
The NHS does a fantastic job for what it is.
'Cradle to grave' health care was a radical idea at its inception when people had to decide whether to heat their house, feed their children OR call the doctor.
So, give yourself a shake.
And no, no 'gratitude' required.
A sense of realism would be nice.
And your Tesco example is facile and daft, you realise that, don't you?? The more bread you buy, the more money Tesco make, so the more bread they will buy, while bringing the wholesale price they pay down.
I'll just leave this here but don'e let facts get in the way of your indignation.