Hubby and I both have long term health issues (you'd think we were ancient!) and both on repeat prescriptions and have doctors appointments ALL the time. I've had NO issues with the NHS at all. My biggest thing with the NHS is I don't have to worry...I can ALWAYS afford my meds, I don't need to worry about going to the doctors and how much something will cost. In the US, we had health insurance, but we still spent a ton of money on appointments and medicine.
The NHS has its issues and some of them are bad, but then so does the US. Everyone's experience is different. I had a horrible issue with my first pregnancy in the US. My OB/GYN ignored issues that caused me to lose my son at 34 weeks, but I went on to have a fabulous doctor there after. My FIL was put back in bed without a heart monitor on the cardiac care unit here in the UK after coming back from some tests. He had a heart attack during the night and died without anyone being aware anything was happening. I guess what I'm trying to say is, both countries have issues with the medical system, but I prefer BY FAR, knowing the NHS is there for us.