That's what I think too. It makes more of a difference than you'd think.

When I was a kid growing up, my mother would make my big sister and me share one candy bar. My sister, since she was older, got to cut the candy bar in half. I got to pick first. How I agonized over that decision. It didn't occur to me until much later that, if it was that hard to tell which "half" was bigger, it wasn't different enough to matter.

When I had my own bike shop I found a different solution to the problem. Whenever a customer complained about the handlebar alignment, I'd have the customer straddle the bike while I'd loosen the clamp. Then I'd ask the customer to tell me when the alignment was perfect and I'd tighten the clamp. Done!