I have a MAC, i use it for my business everyday. Best thing is i rarely have a crash on my computer. No virus's , no driver problems etc....
Is it perfect??? Hell noo, it does however work have a high up time with minimal problems. Which in turn means i am able to earn $$ without the headache of computer crashing, or someone hacking a trojan etc.... To each his own.
And i run windows 7 in Parallel. So basically best of both worlds.