It's really very simple. Regardless of your views on abortion or pre-existing conditions, the debate of health care reform comes down to one question: Is it the federal government's job to provide or regulate health care? I argue that it is not, given my understanding of the Constitution.
To simplify even further -- when, ever, has adding a layer of bureaucratic control made anything more efficient and less costly? I agree that our system needs to be reformed. I am one of the millions who can't afford health insurance. But I maintain that removing layers of middlemen is the way to lower costs and ensure better care.
Making a system more complicated always increases the chance of incompetence and the opportunity for corruption.