As a matter of principle... "aargh"...
i.e. not politics, this is becoming my usual comment on the matter:
TLDR: "oh god oh god we're all going to die" which and I can't stress this enough, is the argument used by both sides, one on the basis of 'immediate national suicide' and the other on the basis of 'slow economic strangulation'.
We have the triumph of hope over experience on one side versus the triumph of experience over hope on the other but I'm not sure which way round that should be.