Not a conversation, but just brain-hurty in general:
My local YMCA has those no-touch Purel dispensers installed all over the place, including right next to many of the doorways. Except they're all installed at around head height (to me, anyway, an average-sized woman). So if you cut the corner too close coming out of the locker room, you get hand sanitizer spritzed on your shoulder. If you back into one - like, oh, if you step aside to hold the door for someone - you get hand sanitizer down the back of your neck. And if you happened to be in a wheelchair you couldn't get hand sanitizer at all.
I don't know how much it would cost them to re-install all the dispensers 18 inches lower, but I suspect they'd recoup their costs in savings on un-wasted Purel within a year or two!