Yes, of course deflation is good for savers and bad for borrowers. But what is the biggest borrower in the world? Hint: its initials are “USA”. And it just so happens to have a magic “money” printing machine to make sure that there is no deflation, courtesy of the Federal Reserve. Thus, deflation cannot happen until and unless the Federal Reserve loses the ability to inflate, which in turn can happen only when no one will take their funny “money” any more, i.e., after a hyperinflation that wipes out the “dollar”.