I've seen them last AND seen them die quickly....
Bottom line is, the lightning cables are NOT durable. They'll last you a good, long time if you treat them gently. I have one that's about 2 years old too, and still in good shape -- but it never really gets moved from a power strip and wall charger by the nightstand.
On the other hand, they tend not to hold up for more than 3-4 months at a time in the car, where the cables often get trapped between the seats or tugged on accidentally when one of the kids is trying to charge a device from the back seat and the cable is stretched up to the charger in the front.
Bottom line is, the lightning cables are NOT durable. They'll last you a good, long time if you treat them gently. I have one that's about 2 years old too, and still in good shape -- but it never really gets moved from a power strip and wall charger by the nightstand.
On the other hand, they tend not to hold up for more than 3-4 months at a time in the car, where the cables often get trapped between the seats or tugged on accidentally when one of the kids is trying to charge a device from the back seat and the cable is stretched up to the charger in the front.
What on earth have you been doing with them? I'm still using the original lightning cable that came with my iPhone 5 getting on for 2 years ago and it's still in near perfect condition...