My little contribution would be that up to about 1890 France was the enemy. Up to 1850 Germany (or its constituent countries ) were broadly long standing allies (Kings of Britain were all German!). This reversed because of Germany's global ambitions. Germanys global ambitions were pretty much the work of just a few men although it certainly had territorial ambitions within Europe, which had suited us since we didnt like France much. The point I'd make is that Germany is actually a long standing British ally, and in truth we fell out because we had identical world aims and ambitions. Jason might draw from this that European nations are always falling out. I might say that european nations are well accustomed to working together in any combination at need.
Someone yesterday was suggesting there could be benefit in Britain taking a more active part now in the euro/greek problem because we could effectively ally with Germany - broadly pro writing off Greek debt because there is no choice - against France - broadly against doing so because of more to lose by defaults. On the grounds that Germany needs the help now to push through a massive Greek writeoff, and because if we do not do this now and benefit from being involved, we will be drawn in irrespective in due course if Greek debts are not written off, when they default. It seems to be widely accepted that it is impossible for Greece to pay off its debts whatever they do and it is arguable that trying will just make matters worse for everyone.
The 'older generation' is more complex than you suggest. Well, mostly dead by now so arguably with little political influence. However the EU was created to ensure peace and cooperation within Europe - by those who lived through the wars. It is the deaths of those people who experienced war and understood exactly the need for the EU which has led to this doubt now. Ted Heath finally oversaw Britain joining the EU and it was his war experience which did it. The modern generation does not understand this lesson of history. The EU was created to compel the nations to stand together in a crisis rather fighting between themselves. This is a crisis. No bullets but the damage could still be very great. It will guaranteed be worse if we do not work together.
Jason, you posted a year old survey. there is one from last december at
http://ec.europa.eu/public_opinion/archives/eb/eb74/eb74_en.pdf. This says 46% of people think the Eu is going in the right direction. 26% think the wrong direction. It lists several other questions they asked, including one about job losses which says more people thought the worst was still to come than not, but the trend over the previous 18 months was steadily towards more people thinking the worst was over, and on that trend should have reversed by now. I could not find a more recent survey to see what has happened since.
Oh, I looked up the uk political party polls which say labour 40% conservative 37%. Are you suggesting the conservatives should prepare now for defeat at the next election? Or resign because they are behind?