I hate all OSs for specific reasons. Windows in general is buggy as shit sooner or later and no matter how safe you think you are behind an AV, you aren't. The Mac OS is like Linux with a big fucking padlock. It's the communist OS. Linux is "if you fudge one thing up, there goes your system" plus its lack of many mainstream software that I like to use. Needless to say, those OSs also have their perks. Macs are great for DJing purposes (though I prefer Linux for it since the alternatives are just about the same). Only reason I'd use Windows was if I was a hardcore gamer and I'm not but I do like the fact that I can use it for making .Net applications. Linux is just there. It's an open canvas waiting for me to do something with it that's amazing. It also makes great software for servers. Not to mention that 99% of it is virus free. Viruses are being written for Debian based systems now so Ubuntu users might be in trouble if they just go around installing random DEB packages.