All I can say is study currency unions and why they always fail. The euro was EUs decision so it certainly is EUs failure. You can't have a different opinion on that. It is a fact they always fail. It is also EU banking rules that have put Italian banks in an impossible position.
As for turning our back on it, the EU refused to negotiate with Cameron, and refuse to negotiate either withdrawal or trade. So remain and reform is a unicorn. It was also EU changed from a trading block to a non democratic superstate. They turned their backs on us.