Even if I use the euro currency for selling, it does not really affect me psychologically. I usually use the dollar while I talk about Bitcoin or even when I read the news and I think it's the same for the majority of people
The tax situation is much friendlier than the US in most EU states, there are more Europeans, though of course USD is more global, and they're cleverer and more attractive than Americans too.
Yeah, europeans taxes are so friendly. That's why all the international firms are moving manufactories in poor countries and moving the headquarters in countries with rude taxes like Panama, Belize and Luxembourg. And all this after the countries helped them by giving millions of euros in exchange to stay in the country and create jobs. Now they took the millions and go out of Europe.