In the UK you don't have to file a tax return unless you have unusual finances (e.g. are self employed), and sales tax is includes in the advertised sale price of items.
We still have to oay taxes of course, but they are much less annoying!
EDIT: I should clarify that I don't mean that the particular individuals that reinforce this particular law wrote the tax bill, I see them mostly as an amorphous class of rouges much as you might regard Annonymous.
But you said that tax complexity was foisted on people in order to make them be more in favor of lower taxes for the rich. I was merely pointing out that this wasn't really the case in the most recent tax bill as complexity for many typical filers was generally reduced.
We should end automatic withholding and let everyone pay their taxes on April 15.
You also propose a very poor solution. A large % of Americans are not disciplined enough with their budgeting to save such a large % of their income to write a single check every year. A lot of folks simply wouldn't have the money when it came due. What would you do then?
Work by people like Thaler and Sunstein is encouraging because it helps us improve our skills in a systematic manner so it can better scale.
I generally agree, but I think terms like "evil" and "parasite" get thrown around a bit too easily.
We're all for simpler taxes, unless it removes the deductions that we ourselves enjoy. That is probably a much larger hindrance than any lobbying, but any such nuance is ignored in these types of shock value articles.
We don't have return free filing because making people fill out complex forms every year makes them hate taxes more and (generally speaking) vote in favor of lower taxes. This ideological position has far more to do with our current system than a relatively small amount of lobbying.
Well, give me the $300 I need to find a preparer then. TurboTax is an incredible value. You can do your taxes in your pajamas over a couple nights and it can handle almost every complex area. The fanciest version is about $60. I've used it for ten years.
Why doesn’t the IRS just send me a bill for the taxes I owe based on the info they already have? 
After fixing a data entry mistake or two, I was able to make them come out same. However, I was much happier with TurboTax's handling of employee stock options, because it walks you through how to correct the incorrect cost basis that brokerages are required to report by law. (This changed a few years ago.)
At that point I could have submitted either one, but ended up paying for TurboTax since I felt like rewarding them for better UI.
(While fixing an error, I did run into a recalculation bug in TurboTax, though; it's not clear how to report it.)