I've found that it is most often the plug on the easily replaceable cord that breaks, which I gather is by design and an improvement over mini-USB, where it was the socket that tended to break.

The biggest issue I've had with micro-USB is that pocket crud and lint tends to gather in the socket, but it's very easy to pick out with one of those slim plastic toothpicks or a similar tool. Every device I've had where the USB socket became wonky, a bit of cleaning cleared it right up.