If you tend to build a bike from scratch, and do most of the work/repairs at home then it could be helpful. Especially with lightweight carbon pieces.

For the standard cyclist, probably not. I just use the Ritchey 5nm tool for adjusting seatpost/stem/steerer tube. Really just piece of mind for me, but I guess it also stops me from over torquing.

Next thing people will craze about is proper torque for a quick-release skewer. It is a carbon part, proper torque must be quantified!