I'm an American working in the Netherlands. Filing US taxes has improved, a lot last year in my opinion, since it got easier to file electronically for free...

I'm an American working in the Netherlands. Filing US taxes has improved, a lot last year in my opinion, since it got easier to file electronically for free... But compare: I got a letter from the Dutch government a few weeks ago saying I don't need to do anything since as far as they can tell my situation hasn't changed since last year. In the US, some people believe that the tax return that they get every year is some kind of bonus. Here, my employer withholds the correct amount. Why is that so hard?