Considering the time most of us spend on a computer, the cost differences between a Mac and a PC are negligible over the lifetime of the purchase, people should use what they prefer and what they're most productive with.
A $300 to $500 difference over two or three years of primary usage is probably a difference of pennies per hour of usage, and that's assuming that you won't waste more time maintaining a Windows or Linux install and that you're equally productive on each OS, which generally isn't the case.
A $300 to $500 difference over two or three years of primary usage is probably a difference of pennies per hour of usage, and that's assuming that you won't waste more time maintaining a Windows or Linux install and that you're equally productive on each OS, which generally isn't the case.