I take it you mean the days when medicine consisted of leeches, bleeding, and liberal doses of laudanum. A normal hospital birth costs an average of over $20,000 in this country. Simple heart valve surgery can cost upwards of $70,000. A course of advanced cancer treatment can easily cost over $500,000. Please let me know how many regular citizens of this country you think can afford to pay those kind of expenses out of pocket. Because that is what a true "free market" healthcare system would look like.