The touch strip turns off if you don't use the keys for a few seconds. So if you are programming and thinking during debugging, you might want to press a function key to step into/over/continue. But the touchbar has turned off, so you need to press another key on the keyboard to wake it up (fn perhaps) and then look down at the touchbar to find the F key because it is impossible to locate as there's no tactile sensation of which key you're pressing.

And then repeat the process a thousand times per day. It's very wearying. And the keyboard is deafeningly loud. A typewriter would probably be quieter.

I say this using a 2016 Macbook for work. Apple replaced the touchbar a few weeks outside the return window that was the result of the class-action lawsuit on the keyboard, which I am very grateful for. The keyboard had numerous keys not working properly (left shift most noticeably) and the touchbar had developed a fault where it would flash a white block next to the power button, constantly.

Apple had to replace the keyboard, the battery, the touchbar and entire top level of the Macbook as part of the repair on the keyboard.

I have a 2012 Macbook as my main machine and that is infinitely better - battery was less dead even though it had more recharges than the 2016; it has ports I can actually use; it has a SD card slot so I can get photos off my camera; the keyboard backlight is actually visible; the keyboard is actually nice to use etc. etc. The only drawback is the speakers on the 2012 aren't great compared to the bass-heavy 2016.

But anyway all is solved on the new Macbooks but I need to sell a kidney to afford one...