A rational way of rationing healthcare?

I think if I were a doctor, I would organise my patients into the following categories:

1.  the easily curable cases

2.  the complex cases

3.  the hopeless cases

and then under these categories I would organise them into 

a)  good patients 

b) bad patients 

and then under these categories I would organise them into patients who are 

i)  capable of leading a productive life because of their age, occupation and skills

ii)  patients who are retired and appreciated by their family and communities

iii)  patients whose deaths would not be noticed until their neighbours noticed a bad smell.   

It is a sad fact of life that more and more people in the West are falling into category iii.