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.
Yeah, right. I never think bitcoin is useless, since many people had already gained extra income out from it. If its useless, why many people are still using or investing on it? Bitcoin is the answer to the prayers of some unemployed and less fortunate people around the globe. They can earn money from bitcoin through joining in a bounty campaign or signature campaign.