Earlier quoted context omitted.
Up voted. Would add that in a deflationary environment no one will want credit so really you have to print money and give it away (or just print it and spend it).
But what about free currency competition? Allow all kind of currencies co-exist. Those who want inflation can use the inflatable currencies, the people demanding deflation can use more deflationary currencies.
I don't see any major harm but I don't see any benefit either. In fact you can currently choose from many global currencies now including the Yen that has deflated over the past decades.