Bitcoin has been impressive in a lot of ways since it's beginning but the one thing that blew me out the most was the ideology. A foolproof peer to peer online transaction system based on blockchain technology was just a beautiful set of works executed and implemented by Satoshi and no wonder it has already made its mark in every field it is being used in.
It's going to reshape the world I am sure and of course, it's gonna make some of us millionaires. Can't wait for that to happen! 
Well it did make a lot of people millionaire, we just don't know who they were since bitcoin is a bit anonymous but the "reshape the world" thing, I don't think so since bitcoin did not really "reshape" the world but it did make some impact in the trading industry. And it really impresses me that even though bitcoin has still it's flaws, there are still a lot of people who keeps on using and supporting it.