For those who ask the questions with no answers and those who continually ponder the answers they deem unsatisfactory- we must press on because it is the quest for understanding in life that gives it purpose- and yet at the same time, it is in the accepting of the unknowable that makes that life livable. Without at least some level of acceptance of the "universal certainties" you would go insane. Is that frustrating? Absolutely. Stupid existential paradox!