Apple cables are notorious for wearing badly. I suspect it's because they favor very thin casing and for greater flexibility -- a lightning cable winds tighter than typical charging cables for other phones. MacBook Pro chargers also suffer from the syndrome.
Apple phones also last longer than other phones, and because their connections remain so standard, you can use the same cable for multiple phones. I've definitely destroyed some Apple cables, but generally they've been on their second or third device.
> I suspect it's because they favor very thin casing and for greater flexibility -- a lightning cable winds tighter than typical charging cables for other phones.
I'm not so sure about this explanation—the cables usually fail at the very ends, where the connector meets the cable itself.
