The Deflationary Argument

self.Bitcoin1m ago
How would you respond to this argument? Bitcoin can not be effectively used as currency due to its deflationary nature. A rational individual will always use any inflationary currency/asset they hold to make purchases prior to resorting to spending their deflationary assets. A rational individual will withhold purchases if he expects the value of his currency to rise. An economy that solely runs on bitcoin will hence suffer from the full economic impact of deflation.