I think bitcoin is an investment that may be very profitable, some of the problems that exist only the value of how much effort we do.
Bitcoin value is unpredictable and it is good sign that the price moves up now and a little bit down again and has never loose its value. Indeed investing on bitcoin is profitable especially to people who uses effective strategies during these times and good amount of profit are awarded only to those who have long patience in this kind of trade industry.
It is just normal to see bitcoin that it is going up and down because that is the normal cycle of a cryptocurrency, its price is always up and down because the demand in the market is not fixed and it is always changing based on the news or to their emotion about the movement of bitcoin. It is best to just keep our bitcoin safe and just be patient in waiting for the price to go up.