You're not wrong either. And the higher it goes, the riskier it gets. And while I'm seeing signs of a bubble, I don't think that (excluding a few volatile 30-40% corrections along the way) we will see an implosion in 2018 just yet. The entire crypto space "only" equals the value of Facebook.

In the end, if it goes another 30x from where we're at today, and then has an 80% correction, you'll still be up 6x. It only makes sense to exit if you think such a correction is imminent, or you believe the entire space is going to zero.