Why does the health insurance system suck? Simple; each state regulates it differently.
No one is debating America's health care system. The debate is purely on the mechanism by which your doctor is reimbursed for care after they provide it.
The best, easiest, simplest, most cost-effective way to administrate that is to have a single payer that handles all reimbursement and uses its leverage as the single payer to bargain for cheaper drugs...which Democrats just submitted a bill today to allow Medicare to directly negotiate with drug companies. Part-D (Bush and the Conservatives' prescription drug plan) prohibits Medicare from doing that now.
So you would support Medicare directly negotiating for drugs, right? If so, then why would you object to a single payer doing that?