I shall never buy a first-gen anything from Apple again!
The first iPhone, the first Intel MacBook Pro, the first MagSafe adapter, the first MacBook Air, all of them were disastrous with countless failures and all of them were resolved and never heard of again, in later iterations.
The hell are you talking about, EVERY single product that apple releases is 'riddled with problems' over here. I've yet to see a time where apple launched any product without half the posts on here being people complaining about QA issues, whether it be scratches or yellow screens, or dents, or things not working, 1st generation product or not. Most of the people posting on here are whiners, the ones who are happy with their products don't post on here or just avoid the place all together. It's like going on any video game forum, you and everyone you know could be having the time of your lives playing the game but if you went to the forum you can bet there are people declaring that the developers are Satan's spawn or something.
EVERY company has QA problems, this forum just makes it looks like apple is bad because it's focused on a single companies product. Go to some laptop site forums and you'll find that everywhere you go, for the most part, 90% of posts (I made that up) in laptop forums are about issues with the product.
I got my first rMBP and it has had 0 issues and I find the battery life, weight, and screen to all be perfect for my needs. There are tons of people who have the same experience as I do, but they aren't going to post in here because places like this are like voids that will suck out any enthusiasm you might have out of you.