Sorry, for me it is not possible to answer the survey question. When the common currency was created, I welcomed that - and I still think it is a good idea. But of course pretty much everybody knew about its flaws. We simply do not have the "framework" (in terms of fiscal, social etc. policy) that would be necessary for such a currency union to work fine.
So you had pessimists who said, right at the beginning, that "something like this will not work" ... and you had optimists (like me) who believed that, with the euro, things would work as they have worked in some other EU policy areas: "Let's get this rolling, and fix the problems en route." In other words, after some time we would get, probably step by step, the harmonization that the euro area is in dire need of. Except -- nothing has happened in that regard.
Maybe many or even most EUropeans have by now grown tired of the EU, and hail the "good" old concept of separate nation states again. And that corresponds to who ultimately makes the key decisions in the European Union: the Council, which is basically nothing but a body consisting of representatives of various national governments. Who are those (heads of state, chiefs of government, ministers) responsible to -- the European voters? Of course not; they care about their "home" voters.
But I digress ... can I check the box next to "mostly positively but doubtful with regard to its future" please?