Though bitcoin's history people have been saying it will never go higher, never worth anything. Look at where it is now. Japan has legalized it as a currency, the rest of the world is considering whether or not to do the same. On top of that people are buying in like never before. I'm not sure there is going to be a correction anytime soon. I wish there would be because my alt coins are screaming double digit stagnation. Gold is the closest thing we can compare it with, but gold has been used as a currency for thousands of years. Bitcoin has around for only 8 years and it's going global which has never been done/seen before. How high this run goes is anyone's guess.