The US wants you to pay taxes on your income. All of it. Not just the part that gets reported on a W-2, but also the amount you won in the March Madness office pool. They (and you) didn't get a W-2 for that.

And then there's the other end. Do you itemize? Do you deduct charitable giving? Do you want Goodwill, where you drop off your still-usable stuff, to have to know your Social Security number so that you can deduct that from your taxes?

If the government is going to do my taxes for me, they're going to have to have a much simpler tax code. I'm not necessarily against that, but it's going to be a fairly big change for a fair number of people, as quite a bit that we're used to disappears. Some of that will help us, and some will hurt.