The advantage of micro USB over mini is that the cheap cable's connector will wear out instead of the port on the expensive device.

https://en.wikipedia.org/wiki/USB_%28Physical%29

> The Micro connector is also designed to reduce the mechanical wear on the device; instead the easier-to-replace cable is designed to bear the mechanical wear of connection and disconnection.

I never had a micro port go bad on a phone. The c port on my Galaxy S8 has broken twice already.

Do you mean USB-C, which is what people are now using? Micro USB is the much older, non-reversible tech.