Would our national debt be over $31 trillion if the Fed wasn’t there to buy the bonds? I don’t believe so.
Would we get involved in so many wars and conflicts if the Fed wasn’t there to enable excessive government spending? I don’t believe so.
Would the Fed be more transparent if it was an impartial policy maker? I don’t believe so.
Maybe or maybe not.
Everything you listed could’ve been done without a central bank.
We’ve had a high national debt without a central bank(See post Civil War)
Government spending is a Congressional responsibility.(Answerable to the people & people like spending)
Wars happen because people love warfare.(Pick up a history book)
With or without a central bank you’ll have the same policies.(The world works the same way no matter the era)