This is a very common and constant discussion at my workplace. And don’t get me wrong, I love linux. But Jamie Zawinski says it in way that is very similar to what I feel about it:
I use a Mac instead of Linux on the desktop for a reason: because I think that the design and consistency that Apple’s UI brings is extremely valuable. I don’t buy computers based on how fast they are, I buy them based on how easy it is to get things done with them, and Apple is the hands-down winner on this pretty much across the board. (Oh, also because I want my audio card to work, but that’s neither here nor there.)
This quote is taken from a post in his blog where he talks about why he prefers to use Safari instead of Firefox on his mac, and you can read it entirely here.