As i mentioned on another thread[1], that's one of those American things that really don't make any sense after spending more than a few seconds about it. There is no legitimate excuse for things to be this bad. The best I've heard is that paying taxes being hard is good because it reminds you how much money you give the government, so you are more attentive how it's spent, but it doesn't really make sense either.
https://news.ycombinator.com/item?id=30842175