(1) it's so claustrophobic.
(2) the rooms are hotter as you're closer to the ceiling.
Uh...not when you're only 160cm tall.... Plenty of head room for us shorties!
Ours are 9', and I do like them, but we had no choice as it's an estate covenant, so we never really thought about not doing it. We did raise our entry ceiling by another 300mm. Or was it 600mm?