You must be spoiled by always using GUI tools that present a pick list - no one would ever type all that crap every time they want to access a file. And, you could just as well use underscores instead of spaces and get the same visual effect AND still permit natural 'break on whitespace' command line parsing of your shell commands. I always thought Microsoft and Apple encouraged using spaces in filenames explicitly to make it difficult for people to continue using command line tools.
Actually ... For someone who manages Windows systems for a living I spend quite a bit of my day at the commandline. And that's why tab completion is my friend. :-)
Let's not get into the whole windows debate and "WTF is a Windows Admin doing on a Linux forum?" type of questions. :-) It's the environment I inherited, "politics," and some badly thought out projects on my predecessor's part keep Windows in the shop. I just don't tell anyone just how much linux there actually is in the shop. ;-)