I think that it is normally because in the current moment of time there are not so many attractive assets which an investor can invest in. The stock market is overheated gold  is in a correction bonds are under the pressure crude oil is unpredictable in the current moment. Bank deposits are too boring. Real estate requries the knowing about the market. Well in the current situation crypto market looks very pretty and perspectively because it is possible that crypto market will begin growing after finishing the bearish trend.