Private vs. Public Health Care - Human Nature Still Rules

Adam Smith wrote of how we get our dinners:

"It is not from the benevolence of the butcher, the brewer, or the baker, that we expect our dinner, but from their regard to their own self-interest."

You could say the same of how we get our health care:

It is not from the benevolence of the doctor, the nurse, or the researchers at the pharmacuetical companies, that we expect our health care, but from their regard to their own self-interest."

With Obamacare, if it goes through, we could say:

It is not from the benevolence of the president, congressmen, and health care bureaucrats, that we expect our health care, but from their regard to their own self-interests.

Just because we call someone a "public servant" does not make them immune to pursuing his own self interest.  He continues to be a rational, self-interested human being who will do things to further his self interest (i.e. he will be greedy).  It's in his nature.

Keeping that in mind, why would anyone think that a private good, like health care, will be better administered by government bureaucrats with little to no knowledge of particular situations than private people?