Plus Sterling will have to go. metric system everywhere and driving cars on the same side most of the world does - thanks Brexidiots!
Sterling would have gone anyway. The Euro was always going to be mandatory, I think it's only the Danes who have an opt-out currently, but we all now these are discretionary, and theirs will be gone soon. The UK leaving will speed up the process.
His heart is in the right place - shame we can't say the same about his brain...