I believe that Americans in the past and maybe even today have preferred the freedom of doing things independently of the government. While it is true the government receives all reported
income, it is not true that they know about all your deductions/expenses. While many Americans are oblivious to such things in general the government gives you control over your own taxes. In reality, it's a small amount of responsibility and lets a person take ownership of the process. It is NOT difficult at all, especially for W-2 with the standard deduction. The whining in this thread is ridiculous imho.
The one time I underpayed I promptly received official letters from the federal and state governments giving me time to pay them with a very minor penalty (it was well under 1% due to the short time frame). It was simple and easy.
Ironically the Trump tax cuts made this even easier as the standard deduction was doubled making it much less attractive to itemize.