Because you are paying for all the uninsured opioid induced overdoses that take up 70% of the emergency ward costs.
You are paying for the uninsured.
By the way. Healthcare is 17 % of the economy. Could you afford to pay 17% of your income every year for health care?
It is expensive. The single payer must be the single collector of the premiums.
Every one must pay into the National Health Insurance Corporation. They will dole out the funds to the providers.