Income tax was heavily implemented during WWII, when rates for the upper classes reached around 94% to pay for the war. Very few objections occurred and we failed to recognize the importance of taxes on a 'need to finance' basis. Meaning, after the war was paid the correct route would be to disband (or decrease to a trickle) the income tax unless situations of certainty arose wherein the government needed money. This would have prevented those wars of attrition such as Vietnam, Iraq, and others because the fed's first and main objective is to run itself from the revenue it receives. Debt is a simple sign the government, or anyone, is stretches beyond its means of finance. Debt is increased when accessibility of funds increase, those receiving funds become greedy, and the result is a corruptly powerful behemoth of bureaucracy.

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"Fools rush in where angels fear to tread." - Alexander Pope