Steep rise in Bitcoin price in June 2016 immediately quadrupled the profits of those coin holders who had purchased them for under $170 over a year ago. That's how cool volatility is.
Unlike traditional currencies, Bitcoin is fully protected against counterfeit and uncontrolled emission. It's more of a digital property than money and can be kept off a thumb drive.
Bitcoin signifies a new era in digital money creation, quickly followed by hundreds of other coins. Many of which failed to start properly, others quite succeeded, but none came close to the grandeur of the original Bitcoin.