why are both political parties, both government and everyday citizens, so reluctant to answer serious questions with serious answers?

Because they can't. Any serious answers would be a jumble of obvious contradictions and fatuous absurdities, such as the stupid belief that the two major parties are polar opposites.

We have a third choice, Gary Johnson. He is on the ballot in all 50 states and the District of Columbia. Watch his videos on Facebook or UTube where he discusses his stances on various issues