Who needs a system that be able to managed by everyone? Most people wants freedom when it comes to their own money. And by that it means if people know that there's an existing currency(bitcoin) that makes their money avoid being under surveillance. I am sure they will use it to have safetiness with their money.
It's not the point. We are talking about future of paper money here. Bitcoin can never be matched what paper money can do. And why such thinking of an idea of removing the paper money to give way for bitcoin? It's a dumb thing to think. Bitcoin is nothing without an internet so how can it deal for the usual transactions that paper money is involved??