I've had zero issues on my 13" nTB. The problem is people typically don't spend night and day on forums talking about how much they love their new purchase. People who are disgruntled, however, will do just that. So looking at this forum, the optics would suggest that every new MBP is a horrific lemon that comes out of the box covered in scratches with a battery that lasts a mere 2 hours if you're lucky.
Apple has a great return policy. If you have the money, there's no reason not to purchase and give it a shot. If it disappoints you, return it.
Personally I love my new mbp. It's easily the best laptop on the market. The screen, the keyboard, the overall feel/thinness, the space grey color (sometimes, at an angle, it looks black). I really couldn't be happier. Whether you'll be as happy as I am remains to be seen, just like whether you'll be a disgruntled as many on this forum remains to be seen.
If the problem was as bad as some suggest, this forum would have 100 times the amount of negative posts about this launch. I've been coming to these forums a long time now. There's always bellyaching. Sometimes it's valid, sometimes it's overblown.