It'll never be used as real from of currency. Think of it this way. If you have a $100 benjamin today and wake up tomorrow and it's deflated to $50.00 what are you going to do. Why would a car dealership take a bitcoin payment worth $13,000 today and tomrrow it's lost 10-15, 20% of it's value?
It's great for people who want to speculate and hope they make it big, but it's not a bar of gold either. Like a guy said on CNBC, gold has been around for thousands of years and it's a tangible asset. What is some alleged currency in cyber space? I hope it all works out for those willing to risk their money, but I'll never regret not getting in on it either.