The touchbar MODEL is worth it. I wouldn't pay extra for the touchbar itself at this time, although I would for the touchID. Regardless, it has found it's way into my regular workflow for the volume and brightness controls and a custom lock button. I rarely use the rest of the functionality because I'm using an external monitor and keyboard.
But like I said, I think the model is a good value compared to the non-touch. Not saying it's "cheap", saying you get some good stuff in this model. As many have said, the 4 ports on 2 sides is the sleeper feature that you never knew you wanted. Plus bump in specs in the processors is nice.
People keep dumping on the touchbar itself. It's like the cool thing to do is use the cliche that it's a gimmick. It could end up that way, or it could end up being really useful. Unless you use function keys a lot, who cares. Why would anyone have a strong opinion against it unless they regularly use function/esc keys. People are misplacing their anger about pricing, ports, and anything new on the touchbar and immediately call it a gimmick. That's a little quick to jump to that conclusion. In the end, it's not a "negative". TouchID is really nice though.