I tolerate my Mac at work since it provides the real Office suite plus a decent terminal. If I didn't need Office, it'd be a Linux machine.
I don't understand the fanboyism any more than I do the AMD/Intel/Nvidia/PC MASTER RACE/whatever blind fanaticism. At least the PC Master Race stuff seems to be tongue-in-cheek, but the Apple zealots generally seem to be serious.
Just ignore them, it's not worth arguing with someone like that.