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.
My friend bitcoin is not useless because many people really deserve to be a wealthy elite because of bitcoin and the crypto currency that most effective in online income.
Right that most of the people in my country are earning from bitcoin and they are getting a lot of benefits from bitcoin, currency of bitcoin is shut like something really exiting if we will hold our bitcoin it will give us a lot of money to save for long time. Bitcoin is the effective way of getting extra money for sure as same like your friends I am getting online payment for my daily posting without investing anything so for me bitcoin is really useful.