The MacBook with only one port (USB-C) has been a pain to use.
And the fact that they charge $120 ($CDN) - almost 10% of the whole laptop cost- for an adaptor so you can charge and use one USB port is an insult.
I also have trouble often where I have a device plugged into the adaptor's USB port, but it is not being recognized by the computer.
If the computer is shut off and I then plug in the charger to the charger port on the adaptor I quite often find out a few hours later or the next morning that the computer did not take a charge. Convenient.
Battery life seems abnormally poor.
I really miss the MacBook Air at times. (killed it with a quarter glass of pinot noir)
The retina display and processor speed of new MacBook is stellar though.
Still haven't found enough of a reason to get an iPad- the lack of a real keyboard for input and using iOS is part of what's ho;ding me back.