A big part of the magic of the RMB's value proposition is how it reflects the iOS lifestyle moreso than the traditional notebook lifestyle.
Those of us who use iPad's for, say, 80% of what is needed for work (note taking, spreadsheets, emails, viewing PDF's, etc.) and were merely lacking a mouse and multi-window multitasking to make it truly useful (create Powerpoints, edit images, build large spreadsheets) were doing just fine without peripherals in our lives. iPad has no USB port, SD card slot, no need for external drives, no need for monitors, etc. So if you start with an iPad and add to it the few things it lacked, you wind up with a RMB and it's just brilliant.
Too many look at the RMB and see what's missing; those who own them have broken through and view them more like iPad's with extras- like traditional full-sized keyboards and a port that allows for connectivity to all the legacies if/when needed and that's simply not that often. People praise the Microsoft products for the flexibility, not what's missing. I wish the same would be granted to the RMB. It's a very misunderstood device. And it's probably the best piece of hardware Apple has ever created.
BJ