Certainly we do not need quantum mechanics for macroscopic objects, which are well described by classical physics - this is the reason why quantum mechanics seems so foreign to our everyday existence.
There was no solution, save that universal solution which life gives to all questions, even the most complex and insolvable: One must live in the needs of the day--that is, forget oneself.
It was my duty to have loved the highest; It surely was my profit had I known: It would have been my pleasure had I seen. We needs must love the highest when we see it, Not Lancelot, nor another.