LOL. This problems you have pointed is just being ignored by its users. You know why? Because it has been very profitable, of course RISK will always be there, but it is nothing compared to the price you can get.
why would you say its useless if you does'nt know about bitcoin as far as i'm concern bitcoin brings as a lot of benefits and it is very east to transact by networking and it is very useful to us who experience about bitcoin.