my main problem with usb c for the phone connection is it seems like a less secure connection than lightning. I have usb c on my MacBook Pro and they always seem wobbly. The cable end is hollow so dirt or dust could get lodged inside the cable. I often leave a lightning cable in my car and the end tends to end up on the passenger floor under somebody's foot when I'm not using it. I could imagine a usb c cable getting destroyed this way, filled with sand or dirt. The inside of the lightning jack on the iPhone is easy to clean with a toothpick, and the lightning end of the charging cable is solid so it's also easy to clean and quite durable. I can hang a charging iPhone by its lightning cable and it won't disconnect easily. There is no play in the connection, it feels rock solid. I like lightning. I also like the move to the new usb c at the other end - I don't need an adapter to plug my iPhone into my computer anymore.
The thing that bugs me, is that they stopped including the charging brick, assuming people already have them, but we already have usb A charging bricks, not usb c! Come on, apple.