We don't need single payer, because it would have to be government run and if the government, in the throes of budgetary concerns, decides to cut reimbursement rates to clinics for treatment, then a healthcare provider has nowhere to turn to compete with those rates and keep their business running. They are stuck with whatever rate the gov. gives them. I know it would cut down on administrative costs, but you know what they say about having all your eggs in one basket. Thats what single payer is.