If we stayed on the gold standard, the economic cycle would drastically amplified and we would go from massive inflation followed by depressions every decade. I have presented a detailed analysis of the "sodom bed" of the gold standard few times (#msg-507644, msg#-555089, #msg-1150995, #msg-1150808, #msg-1471212).
A lot of people think that Greenspan is still a gold bug, well you may want to read "Maestro" by Bob Woodward to get an inkling on his conversion. I think that today, Greenspan would consider being called a "GOLD bug" or a supporter of backing currencies with GOLD as an asteisticon. Of course, this assertion may be nothing more than indulgence in obnubilation on my part. Many still maintain that Greenspan never left the "Austrian discipline" camp, I think these people are witnessing nothing but kinephantoms, though.