I think Bitcoin may have a great future given the adaption of lighting networking and other upcoming innovative technology coming through. This will push this "digitial gold" for more mass adaption by lowering the fees and possibly the translation times. CNBC often calls bitcoin experts and wall street analyst to predict the price of bitcoin by the end of 2018...and most have said it will be $25k! Looks like Bitcoin still is a great investment asset for your portfolio even if you buy few bitcoin and keep it for few years! Holding is a key to success in cryptocurrency for now. There is not much to day trading unless you are trading in a large volume...then only small fluctuation would matter a lot and bring in profits.