It's not like we rolled dice to get the spending we had. Decisions were made based on information available. There are detailed explanations available for all sorts of spending.
Refusing to seek that out isn't the same as it not existing.
That's not to say the decisions were perfect, far from it. But thinking we can arrive at better outcomes by just throwing it all away and ignoring all we've learned is the height of insecurity and arrogance, not a sign of strength.
Edit:
> that's why Americans just voted for someone who vowed to decrease spending
The number of people that voted as they did that would switch their vote if only someone would explain where their taxes went in more detail is extremely small.