And it was a different bloc in those days, with a different vision. It may be entirely hypothetical but I doubt that we’d have voted in 1975 to stay in a union with, or with the stated intention of developing, the treaties, legal structure and rules of the 2016 EU.
I said upthread that I voted remain. I thought on balance that the upheaval and harm from leaving would outweigh any economic or political benefits. I preferred more years of attempts to improve the EU from the inside and a referendum in, say, a further decade if nothing got better. I believe I was right. But the majority disagreed and my side lost.
That being so we have to work with the situation as we find it now. Re-joining is certainly an option. But it’s a complicated one that needs many, many things to be considered, not least the terms of entry and membership. The political complexion of the bigger EU states is also a major factor.
We can’t simply be guided by a middle-class impulse that continental Europe is a jolly nice place, and sooo much more civilised than those beastly, vulgar Americans. Whatever ardent re-joiners might say that is what underlies a great deal of the more vocal parts of the pro-EU movement here.