I don't know about the new connector's durability, but if it breaks, just put in a new one.
I had to replace the dock connector in my iphone 4 and it cost me $30 and an hour of time.
Ifixit shows you how to do it for a 5: http://www.ifixit.com/Guide/iPhone+5+Lightning+Connector+Rep...
Versus (at least in theory) the design of microusb in which the solution is simply "buy a new $2 cable"?
I don't know about the new connector's durability, but if it breaks, just put in a new one.
I had to replace the dock connector in my iphone 4 and it cost me $30 and an hour of time.
Ifixit shows you how to do it for a 5: http://www.ifixit.com/Guide/iPhone+5+Lightning+Connector+Rep...