As someone who used to travel a lot, I really miss having different currencies in Europe. I love going to non-EU countries - figuring out the currency is part of the "otherness" of the experience, and part of the joy of travelling is to experience things that have not been McCultured.

I also think that anything that contributes to a lack of homogeneity is a good thing. I'm still deeply suspicious of a lot of EU legislation whih seems aimed at ironing out the cultural differences between the member states. Well, what's wrong with a few wrinkles? They add character. I'm still trying to figure out what Europe is for, apart from trying to create another superpower.