The main factor people getting afraid to invest in bitcoin is because the bitcoin price is very volatile and there is no law regulating bitcoin. If they do not already know the bitcoin completely, they must think over and over again. After all they are afraid that one day they may lose their bitcoin, then to whom they will complain and hold accountable. Most of them prefer to invest in the form of goods.
Yes, the volatility of the price of bitcoin that's the reason why others are scared of investing their funds in bitcoin, the price of that coin can change every time and can make you rich or poor at the same time, the good news is you can predict the rise and fall of the price if you study the bitcoin that much.