Can we quit pretending that all credit is evil?
In general, credit is not a bad thing when used for self-liquidating productive activities. Credit for consumption is not recommended. Credit expansions are simply economic errors.
Your questions are important and deserve proper more detailed answers, and and here.
Worthwhile, but not the end-all-be-all of the argument. Laissez-faire capitalism is an ideal Ideals break down in the real world. Not that I am not arguing against free market -- nothing could make me do that. Only that laissez-faire is an ideal -- a mirage, and in the real world, exploitable and ultimately unworkable, as is any ideal.
w/r/t to link 1, it is a nice exposition of common sense. It was summed up by the non-formally educated traders on Wall Street generations ago: Good money drives out bad.
Can I buy an "e"? S/b "NoteE that I am not..."