Micro has rendered numerous devices irreparable, or not-economical-to-repair, because the device-side connector fails. Thermal cameras, audio adapters, countless cellphones. Thankfully my daily-driver phones tend to be Samsungs which keep their USB connector on an easy-to-replace sub-board, but I can't say so much for FLIR's finest. I've thrown out my share of flaky micro cables, too, but those are cheap to replace. It's the device-side failures that have rained on my parade for years.
Mini, on the other hand, has been bulletproof. Countless Beaglebone Black boards, FTDI adapters, logic analyzers strewn about my bench, my TomTom, my GoPro, even my old Blackberry was mini. And not a single one of them ever died because of a USB connector problem. (The magic smoke has escaped from more than a few, but that's another story entirely!) I've thrown out plenty of mini cables, sure, but the device-side connectors simply don't fail like their supposed design would suggest.
Regardless of their intent, I consider inclusion of a micro port to simply be a design flaw at this point. Mini or C is the way to go.
Also, a lot of devices like the Gopro and Tomtom came out when Mini was current, and kept compatibility for years to respect their customers who had invested in accessories and stuff, and didn't want all that to become useless if they upgraded to the new unit. I appreciate that.