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.
At a certain point we need to grow up; we need to look inside ourselves for our inner guidance. There are things most human beings know; they just don't want to know them. They know deep down that certain things in their lives are working or aren't working, that certain parts of their lives are functional and others are dysfunctional. But sometimes, as human beings, we don't want to know what's not convenient. So we pretend not to know.
What we need to realize is that there can be, shall we say, a movement, a stirring among people, which can be organically designed instead of politically designed.
If you have to have it, it's ego. If you have to not have it, it's ego. Hold life lightly and it will deliver what you need and release what you don't.
It is a mystery that is hidden from me by reason that the emergency requiring the fathoming of it hath not in my life-days occurred, and so, not having no need to know this thing, I abide barren of the knowledge.