i like my Touchbar also, and wouldn't trade it against function keys. They are just so boring most of the time, and i'd probably only use them to adjust screen brightness, and maybe speaker volumes.
But on my Touchbar, i have volume, mute or screen brightness always there. I can touch it, slide it, and that's it. Doesn't work better or worse than function keys, so no pro or con there.
However, i did configure me a Screenshot button there. I used it alot. it's SO convenient. I love it so much, that i'd prefer to remap a function key to a screenshot button, instead doing the 3-button keybind.
In some Apps, the extra functions were usefull. "Run" or "Debug" while learning Python in Pycharm was nice.
Microsoft Word makes very great use of the Touchbar, i used that alot.
It could just be a little more responsible, but then it would also activate more easy when you don't want it...
Also, an in-house possibility to configure the functions per App and per App Window (For example: I want the Video playback progressbar in other browsers as well).
There is just too much unused potential. However, i do not mind it at all. I probably wouldn't pay an extra 100-200 bucks for it, but at the same price, i would take it over the function keys.
If apple throws it away on future Macbooks, i'll get over it. I'd miss it, but not that of a big deal.