1. The Touch Bar is appalling if you're at all a touch typist. It puts destructive actions just an accidental brush of the finger tip away. 2. The keyboard is failing all over the place. My left command key has fallen off, and three keys occasionally stick resulting in double entries. 3. The trackpad is so big that there's nowhere to rest one hand while you scroll with the other, resulting in exposé happening when you're just trying to scroll a web page. 4. It crashes a LOT. I reckon roughly one kernel panic a week since I've owned it.
It's absolutely killed my confidence in Apple hardware and after owning Macs for over 20 years I doubt I'll ever buy a Mac again. It's made me a permanently angry person.