Today I was reading on The Wall Street Journal an interview to John Rainey, CFO of Paypal. He said that Bitcoin will probably become a popular payment method in the future, but right now it's too volatile to use it as a currency.

My opinion is the same about volatility. Right now we can't use it as a currency because of its price changes, but I don't know if Bitcoin will ever have the stability needed.

There are lots of agents manipulating its price all the time, so I don't know if it will be ever possible to use it one day as a payment method. It's like trying to use gold to pay for something. As long as we compare BTC with USD it will never be a currency.

What do you think?