Like any investment when you look at the LONG trends, you start to see a pattern. Each year Bitcoin seems to be worth more than the previous year.
This is key
The thing is, when talking about this kind of investment, you don't see the charts from last month. You see the charts from last year o the last couple of years!!
Bitcoin will go up again. And then down again. And then up again. And, trough time, you'll see a clear tendency to the sky!
Don't panic, just take the data and look at it. :)