We should use debt only as much as necessary. Normalization, promotion, even subsidy of debt leads people to make poorer choices and to think in the short term. It destabilizes the world, and sets up traps for the many naive people, traps that benefit lenders.
Well, an influx of money can be a bad thing too: 1/3rd of lottery winners go bankrupt within 5 years of winning...I knew somebody who gave their kid a sports car on his 16th birthday...a week later he and his car were pulled out from under a semi truck...
Whether something is good or bad depends on how well or how poorly you use it. Its not intrinsically good or bad.
