Nowadays, going from country to country isn't quite the same with the same currency stretching across most of europe.
I think that's the whole point of euro and Schengen. ;)
I'm glad I'm Norwegian and still have the norwegian currency, instead of the boring, soulless European Monopoly Money.
I dunno, I don't really want Finnish "markka" back. It is just so much easier nowadays to go abroad with Euros in your pocket (can trade them to local currencien anywhere in the world, just like US dollars), and also buy stuff online abroad.
Euro has also guaranteed much lower interest rates, but of course in many countries this has led many people getting too big mortgages, which is a problem.
I'd personally prefer that the strong euro countries have their own Euro, and the weak countries whatever they want. The current problem with euro is that there are too different countries and cultures in it. The weak economies are dragging the more powerful ones.
Ps. I consider Norway a special case. After all, you just got lucky decades ago finding oil. :) Then again, thumbs up that you've known how to handle your natural riches, unlike some other oil countries like Nigeria who are tearing themselves apart due to oil.