Well they can mix if done right. I use private health insurance and it works fine for me. So please tell me what
I am doing wrong.

You are advocating taking a working industry and making it a
federal industry.

The federal system will force people to carry insurance whether they wish to or not.

The federal system will force people who cant afford to pay for it to pay for it or risk a fine that cost as much as the premium.

You example of using fire and police is not even close to what the issues are so please stop.

My local taxes pay for fire and police. My state taxes pay for state police. My federal taxes pay for federal law enforcement.

Now you want me to use more federal tax, its a tax if you are forced to pay it, to pay for health care which one side says it will cost me the same and the other says it will cost me more.

In the words of your hero,we have to pass it to know what's in it, turns into we have to pass it to know how much its gonna cost you to pay for it.

You will be hard pressed to convince me that the Federal Government taking over any industry is a good idea.