My experience defragging my Macbook Pro (OSX).
The irony of a mac not being able to defrag, is that macs are mostly used, AND MARKTED for editing media of larger files for the creative individual. This is a problem for people who come from having a knowledgable Windows OS background that have converted to mac for this reason, (take time away from PC gaming to focus on my creative work).
Unfortunately for people like that, me included, you don’t realize that you still need window’s untill its too late (bored of working all the time, video games were the source of creative inspiration). You learn that Apple is just better at hiding their OS flaws than Windows (No Reg-Edit), and when you come across these flaws and realize you actually need a non virtualized Windows because not all software works on in OSX (video games), and there is software necessary to make your job easier that “just works” better on Windows (winamp and steam / xfire). But by the time you realize this its too late to do anything about it, because you’re hard drive will be fragmented beyond any point to partition an appropriate amount of space for a Windows operating system to run any of that necessary software.

