Somehow yes it is quite dangerous because of out of control. We all know that if something has no control this might be gone without further notice or advice. And that is the thing that many of the users are afraid of and I think that it is also makes the bitcoin dangerous. Just imagine if you put or invest almost of your money then one day when you wake up, all your investment is gone with the wind. And you can’t blame anyone but just yourself because you entrust almost all of your money in bitcoin.