I think it also might be difficult to articulate the fear that health care and insurance create in the US. At one point, I had to carry my own health insurance. First, there were only one or two companies I could choose between, so no real competition at all. I have both allergies and asthma and a long documented history of needing meds for both. Of course, in order to cover that, I would have had to take out a policy that costed over 2,000$...a month. Instead, I took the reasonable option which excluded my allergies and asthma (my doctor loaded me up with samples to try and last out the year) AND, because I had had an issue with it once, my left ankle (really, once, when I was eleven!). No matter what, even if it broke because an insurance agent sat on it, my left ankle was in the no-go zone.
I was terrified of hurting myself the entire time I had that policy--and, even when I had an *amazing* by US standards policy, my prescriptions were still almost 100$ a month and looked likely to rise as the district I worked for scrambled to save money. I had no control over my own health care, and there were no alternatives.
I understand that the NHS isn't perfect. I understand that it might not do everything it possibly could. I understand the frustration of paying for something and then not getting what you thought you were paying for. But I will never, ever feel less than fantastic about living somewhere where I know that I will be able to get treated if I am sick. And where it's "safe" to trip and break an ankle!