I have no idea why do these people compare bitcoin to gold. It's like to compare PC game cossacks to real imperia of rome. Do you really understand or analyze what you compare to what?
Since subject is more important here, I would say that anything needs a logical reason. I can say that bitcoin will fall to 1$. Let's open threads about my word ok? That's not correct. I will say: Bitcoin will never be x40 of current price. Why? Because it's block size + not so much customer. The more demand (number of bitcoins is limited) - the higher the price - it's rule of economics.