You can just ask the IRS for your "tax transcripts" and do the data entry. People don't do this because it leaves tons of money on the table.
Now you might say that a tax game that rewards skilled play is bad. But are you sure about that? Because everyone with influence over the system (who all happen to be skilled players) happens to be quite fond of the game, observably speaking.
In my country I literally got a letter from the government if I could please file my taxes, because they believe the automatic deductions are too high so I am likely owed a back payment. In a previous year (I am not very good with non-timing-critical paperwork) they even called me on my personal cell to inform me about something similar.
The slogan of our tax collection agency is "we can't make it more enjoyable, we can only make it easier". If you're a regular employee and your taxes - deductibles or not - are a hassle, then that's 100% a political choice.
In other countries, you can still do it yourself, you just don't have to do it if it's simple.