I bought it, but only because B&H Photo offered a great price of $122 with the purchase of the machine. (50% discount on their normal price of $244). I would have never bought it for the Apple price of $350. At a discounted price from B&H, eBay, etc., I would have been on the fence.
It can be a complicated decision with the rMBP. On the one hand, less mechanical content suggests that the machine is not as likely to fail. On the other hand, if the keyboard or trackpad were to fail, I wouldn't try to repair it myself, as I would have with an older MBP.