One assumes that there is an attempt here to link life expectancy to quality of care. Unfortunately, life expectancy is much more about lifestyle choice than the quality of medical attention one receives. We (as a nation) have one of the highest obesity rates in the world, thank you fast food and sedentary lifestyle. This means more diabetes, heart conditions, and other problems that come with being overweight. No amount of quality health care can overcome an individual that refuses to eat properly and exercise.

We also shoot/stab/kill each other at a rate that is above much of the developed world, in addition to smoking and drinking. The mortality rate for inner city males aged 16-30 is off the charts compared to suburbian counterparts. Even anecdotally we all know this comes from joblessness, poverty, crime, gang activity, etc. Again, these are things that regular visits to the Dr. just aren't going to address.

FYI, infant mortality suffer from it's own problems when used as a gauge of quality of care.

IMO, a far better measure of care quality is to look at things like survival rate or length of life following diagnosis of terminal diseases (i.e., cancer). While there is certain to be some component of chance, it at least gives us a more comparable measuring stick across health care systems. Granted, there's a lot of wasted spending in our current system, and we could start to address that by dealing with all the red tape and beauracracy.

You're reading way to much into this. The only thing this graph shows is that life expectancy and healthcare expenditure are correlated. Nothing more. There is even no proof of causality. You can make conjectures as to WHY there is this correlation, but for me the question is why is the U.S. an outlier.

Insert platitude about correlation does not equal causation. I doubt health care spending alone causes the variance although some factors correlated to health care spending (but not health care spending) might cause physiological differences. For instance, people with lower social status within developed countries has shorter telomeres, and this does not seem be directly related to health care spending.

http://news.bbc.co.uk/2/hi/health/5188742.stm
http://www.ncbi.nlm.nih.gov/pubmed/16856882

http://www.ncbi.nlm.nih.gov/pubmed/17156082 (for a counterview)

I actually considered writing the platitude about causation and correlation. The interesting bit is how off the grid the U.S. is, though.