almost like gold holding bitcoin is a profitable investment because the predicted value will further increase annually just don't panic when its value fell even at the moment used to rebuy bitcoin because most likely the higher value will
but to achieve it we need great patience. sometimes bitcoin prices declined unexpectedly. like the last few days many people who do panic sell. whereas we just have to be patient, bitcoin prices increased again by itself.
If anyone wants to achieve something, he/she needs patience. So that's why holding of bitcoins are good way to make money. It has it's side affect, that patience because bitcoin's price is very changeable and with regular trading it's not difficuly yo achieve even more profit than from holding them.