For people, who look at BTC from this side, I can say, that a lot of people consider this fact as an advantage, others may think that this is an disadvantage. Bitcoin and altcoins are very volatile, meaning that you could lose your shirt and your trousers if you buy high and sell low. In December 2017, Bitcoin hit its highest price at about $20,000. Now it is ~3600. Decide by yourself what is the best for you and your future