My retina macbook 13" is three years old, still as snappy as I first got it, no issues at all. Everything still works completely fine and it feels solid. The battery still holds 90% of its original charge. That's why I'll get a macbook again, because if I hadn't I'd have gone through at least 2 Windows laptops between then and now. These are just built way better. Other examples of laptops that compete on build quality, weight, and size are just as expensive.
But I do agree that they need to pull a miracle to get the mac lineup out of the sorry state it is in right now. I guess they're good enough for most people, and looking around at my university library I'm sitting in right now I can see many people with new macbooks and macbook pros. The hard part is for Apple to do something _interesting_ without making it _worse_...