I can't believe the amount of threads about why to, or why not to buy a rMBP!
I'm basically a tech whore and roll with just about every popular OS out right now, including Android...yup I got a nexus 4, and 7, and enjoy them both..On the flip side of that I also have in the past been very loyal to Blackberry over the years, and will grab a Z10 when it arrives on at&t. To me tech is tech and I enjoy it to the fullest...
The moral of the story is this,,,
I get what I like and could care less about what other people like or use. @ the OP- Go to Apple and play with the Retina, if you like it, get it! Its as simple as that!
Its a kick A## machine! Probably the best lap top that I've ever owned. Is it perfect, no...Nothing is! But when I open that lid I'm blown away every time. And I don't see any lag, and I happen to also run Parallels with out a hitch as well thanks to 8GB's of some speedy ram. A lot of people will chime in and say it's expensive and blah blah...Yea Yea we all know its an expensive machine..But all of Apples stuff is expensive. If its a money thing, your knocking on the wrong door, anything Apple will cost a high premium...That's just the way it is. Get what you like and call it a day!