Each investing decision needs to be taken with the utmost care however you can take almost any time in the past on the history of bitcoin and you are going to find that its value was lower, with the exception of a month or two in which it was higher than the current levels, this tells us that if you wait for enough time and you hold your coins then you will get profits, the real question is if you are going to be able to do hold your coins once you buy them? And this is only possible if you are truly convinced about the technology behind bitcoin.