I have used a Mac. All throughout my high school career, as well as my cousins and a friends.
I don't hate them, but I prefer PCs. I find PCs much easier and less expensive to mod, I find more software is Windows based, which you can run on a Mac, if you have bootcamp... but that still requires buying another Operating system, doesn't it? Above all, I've used a PC since I was a child. I have a preference also based on what I'm used to. I'm not afraid of change, I easily use Macs. I just prefer PCs.
What I do hate: All of the false 'facts' associated with them, as well as the assholes that never try to look at things from an even remotely neutral point. Nor do they acknowledge the existence of opinions. It's those Mac users I hate. I don't like PC users like that, either, but I find Mac users that are like that either more common, or they're just that much more annoying.