I roll/unroll the cable several times per day and my charger is completely fine. I got it with my Air mid '13 two years ago and use every day. It has probably a

I roll/unroll the cable several times per day and my charger is completely fine. I got it with my Air mid '13 two years ago and use every day. It has probably a lot more to do with the way you roll it (and/or the one Apple thinks you should) rather than an inherent cable weakness.