OK, So the GOP takes charge, cuts taxes, deregulates and the economy goes into the shitter (add excuse here), the Democrats take charge and the economy starts to come out of the shitter (add second excuse here).

What's a rational person to conclude?

Add in the anomaly that every Democratic president for the last 80 years has had greater percentage job growth than any Republican president for the last 80 years (fluke?).
That of the 11 trillion in National Debt, 9 trillion was added during Republican presidencies.

Can a rational person endorse GOP policies?

Or would a rational person blame it all on Barney Frank?

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“ The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities; that is, in proportion to the revenue which they respectively enjoy under the protection of the state.”

Adam Smith , The Wealth of Nations 1776

"We have always known that heedless self-interest was bad morals; we know now that it is bad economics"
FDR's second Inaugural Address