That's great, but sharing my experience was not a call for others to add their own experience or to critique mine. If you want to share, please share on the top-level comment.
I countered with my own experience that it is not.
Ancedata all around.
I'm glad your system works for your family. Similarly, I'm glad ours works for our family. But from both stories we can see that what you claim as a biological fact is not so clear.