By looking only at the yearly lowest dollar value you'll find out that Bitcoin is always more expensive in a given year than in the previous year. On average, its dollar value increases (at least) 325% p.a. on average (2010 - 2018).
Thoughts, ideas?
Full video at
http://y2u.be/5TMygwWv4dcBut that doesn't mean that buy bitcoin will instantly give you profit in the short time. The best way is by using dollar cost averaging strategy and hold bitcoin for long term. If we choose this kind of strategy means thats we will become contrarian investors who only buy bitcoin when the price fall.