Opinions are so different... we find floor-to-ceiling windows absolutely brilliant. The sense of space is so much better, everything feels so much more open, inviting, ... simply more beautiful, both inside and out. Floor space... okay, we have enough of that anyway, but for example with plants: A large pot with a beautiful plant in front of a floor-to-ceiling window looks much nicer (both inside and outside) than a windowsill with small flowers... ; For children, floor-to-ceiling windows all around the house are a huge enrichment, they can look out everywhere without climbing... at least ours enjoy it very much (yes, they are allowed to go outside sometimes and not just look out ).