You are correct that it is almost universal for humans throughout history to invent religions that explain the unanswerable questions of life nad give life meaning. Of course, every culture invents a different God, no two of them the same, and therein lies the rub.
Even the most devout extremist religious nut only has a small chance of having grown up being exposed to the "right" God/religion out of the thousands that have existed. You might actually be making the right God more angry by following a competing God than by choosing to stay on the sidelines and follow no God. But most religious people think that everything they believe is so blindingly obvious...