Suspended
Hmm, I think you'll have to revisit your UK 60's & 70's history if you think we managed the country and economy during that period perfectly well
And the world is a totally different place now then it was 50 years ago, so it's not unreasonable to say it is an unkown about how things will pan out and if they will be better, worse or the same for us.
Economics is cyclical; EU integration has done nothing to change that
It is unreasonable and disingenuous to boot.