As for why the company is changing the dock connector that has been on nearly all iPhones and iPods since 2003, Schiller said it simply wasn’t possible to build products as thin as the new iPhones and iPods without changing the cord. Hence, the new “Lightning” connector.
Micro USB might not have achieved this goal. Looking at that Lighting (terrible name) plug the connections are on the outside instead of inside on the micro USB.
Still really annoying after the 30 pin has become essentially ubiquitous.