Out of the three OSes, Linux usually takes the longest to tweak, followed by Windows and then OSX. A Linux system to my liking will take a few days to get setup the way I like. A Windows system will take usually a whole day. And OSX which I use at work, takes a couple hours to tweak to my liking.
Each OS has its own place and its own niche of people who are enthusiastic about it. It's popular to hate on Mac because their target audience are artists.
EDIT: Didn't notice this was closed.
