I use macs. I'm well aware of thier limitations, and absurd increase in cost over comparable hardware.
I use them because of great waranttee experience while deployed (applecare is international, unlike many companies whose plans cease once you step out of the country.
I also use them because Logic Studio is, in my opinion, better than (and indeed cheaper than) ProTools.
I also , being a space-challenged guy on my desk, like the small form factor that only iMacs seem to have done in a functional manner.
Recently, i wanted to upgrade the video. I bought a MXM card off the internet, opened the mac up, and installed it. Too easy. Macs are self-repairable, and most non-apple owned stores that are authorized apple resellers/repair shops will order parts for you if you ask them. Or , if you're like me, you get certified and order your own parts. I can do my own warantee repairs.
Yeah, there's some dumb fanboys... But don't lump everyone who uses a mac into the same group of nitwits. Some of us are smart IT pros who simply like them better. I also enjoy being able to worry less about viruses and malware.