Well, as things are going increasingly wireless and solid state we have a curious mix of SS and old hardware like headphone jacks. If you were to break your headphone jack I presume you could get one of the zillions of USB sound cards with headphone jack that offer better sound anyway. I also presume you could still stream music via wi-fi with an Apple TV or AirPort Express or via AirPlay devices or bluetooth headphones. So much ado about nothing? Apple already gave up on user-replaceable batteries ages ago so this is nothing new. And the last generation had non-upgradeable RAM as well - nobody buys an iPad thinking they can upgrade the RAM later... this is how things are going. So the practical advice is: max this puppy out if you want one but don't lament the other stuff. AND BUY APPLECARE if you're going to invest the big bucks in one of these.
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