Volume and brightness control sliders are nicer than the keyboard keys IMO. For plenty of applications I use the contextual shortcuts from the touchbar instead of memorizing keyboard shortcuts which is very convenient. I don't even really think about what I use it for now...I just use it, as if it was a regular extension of the muscle memory from my keyboard. It took a bit to acclimate but I've been using it for over a year now and I don't even think about it now.
