Personally I love the thinness and lightness of my Retina MacBook. I can easily hold it with one hand. Or even with a few fingers. I can toss it around with eas

Personally I love the thinness and lightness of my Retina MacBook. I can easily hold it with one hand. Or even with a few fingers. I can toss it around with ease. Maybe it's gratuitous to be that thin. It's certainly not gratuitous to be that light. I also loved the hell out of my MacBook Air. I recently gave that to my girlfriend. (Hence me now having a MacBook Retina.) It's four years old and still works as well as the day I got it. It's perfectly zippy. It's only downsides are that the screen isn't nearly as good as the MacBook Retina screen, and the speakers don't go loud enough. Re iMac fans: well, I love the fact that my MacBook Retina makes no noise at all. But the noises made by my work and home iMacs are not loud enough to bother me in any way. They certainly handle their loads just fine, as long as you don't mind a bit of extra white noise. But then again, I kind of miss the days when you could hear the disk drive in a computer chugging away. You could often tell what the computer was working on by the rhythm of the chugging.