To add another point: I've had a 2017 MBP for over a year now and I don't mind that it only has USB-C plugs. I have an adapter for the rare cases when I want to plug in some older USB device.

I actually really like their push towards USB-C everywhere. The only major device I own that doesn't use USB-C is actually my old iPad. If they killed their proprietary adapter in favor of USB-C I'd be very happy.