Well, it will hardly kill Apple to do this. They already made the switch to a different connector when they went from the 30-pin connector to the lightning one, so this "it will make the accessories obsolete" complaint doesn't hold a lot of water - they already did that once and hey...didn't seem to hurt them any. And they never actually complied with the EU's directive re: micro USB anyway - other than providing adapters to EU customers. I applaud the move to *ONE* standard - and USB C makes a lot of sense, both for users AND Apple. So let's hope they actually make the switch, instead of providing yet more adapters.
BTW - adapters with good reviews can be had for under $10 on Amazon - and anyone with a newer MBP who wants to sync an iPhone or use the MBP to charge the iPhone needs one now anyway.
I'd be quite happy if I could ditch all these different connection types and go all USB-C. I'm not buying any more external hard drives that don't have either USB-C or Thunderbolt. The speed difference is quite startling, as I learned with my new iMac and new MBP; the backup for one was on a USB-C drive, the other was on a regular USB 3.1 drive. I not only MADE the backup on the USB-C drive, I used Migration Assistant and got it all installed while the previously made USB 3.1 backup kept chugging away at about 1/10 to 1/20 of the speed on the other Mac (and it was nothing to do with the computer speed - they're very similar speed-wise). It was an interesting real-world test.