Before you invest your money you should first understand what will be invested because if you want to have stable money you better invest with gold but if you want to get good results and big profits you should invest into bitcoin. If you invest in bitcoin you have to wait in time because bitcoin has an unstable price. 
Yes, it true and i was agree in to you. It is better to understand first what we should goint to invest for stable our money or want to have a lots of profits. So for me, i know it is better to invest my money in bitcoin, because in bitcoin i was having a chance that i will get or earned a lots of profit from it. And yes, the price of bitcoin will not stable sometimes it will so high and sometimes it will low so the effective way is to hold our money for a long term and by waiting the time that bitcoin price will so high. And finally, in bitcoin we are become profitable and it depend on us when we are trying to invest. But for me, by investing in bitcoin is a good way to invest my money.