Which is better, 100 per cent influence over one's own country or 7 per cent influence over the United States of Europe? It seems pretty clear to me.
The sheep-like call, "Can we afford to stay out?" displays a large underlying dose of defeatism. I cannot see that a country with the fifth or sixth largest economy in the world is incapable of standing on its own two feet.
We should not join EMU. And, in the medium to long term, not joining EMU means not being in the EU, because our partners would not allow it. It is time to leave. Shake hands with them, wish them well, tell them we will stay in close contact, but set off into a new future.