It is not really dangerous and besides, all investment whether it is in real estate or not has risks involved. The same with Bitcoin that is volatile, but the thing in Bitcoin is that, for a long run, its market value is continuously increasing. It is just that at this moment, Bitcoin is experiencing contonuous backdrops which made its price low. Also, it opened the best time to invest in Bitcoin since its value is expected to eventually to go up after a couple of weeks from now.