I think the goal of philosophy is not only to answer questions but, ultimately, to ask better questions. So, one should always be questioning one's opinions and assumptions. Progress is never made when assumptions are blindly accepted. Reexamining an assumption and providing a new, more accurate explanation is the stuff of Nobel prizes. Feynman's Nobel Prize is an example.
I would also note that the more complicated a problem, the more likely most people are to have a simplistic "black and white" opinion. Challenging such an opinion is scary for many people and they react strongly and in fear, hardly the stuff of intellectual excellence. Most people hate the ambiguity of uncertainty and, indeed, because they find it uncomfortable, opt for the simplistic, if untrue, answer. Rigorous, hard thinking is hard and learning to enjoy such painful thought is something one must endure with faith in the ultimate, albeit delayed, intellectual gratification unless, of course, one is born to such pleasure. One must learn to live with ambiguity until it resolves toward a better understanding, if such ever happens. Just think of the persistent, yet aging physicists, who will die before string theory (brane theory) is ever resolved (or not), or before the Higgs Boson is experimentally observed (if ever).
Anyway, there is no better example in the US of simplistic thinking than the tea party approach to economics. Or, for that matter the true believers on both sides of the political spectrum. Economics is extremely complex because it is inherently an open, chaotic system for which there is never a complete data set. So, to believe that there is a simple answer to the current economic problems and, thus, to limit the tools in one's economic tool box is to be wrong. Such is the stuff of ideology.