Hmm dunno, i guess it depends on the problem to be solved, it can help in a lot of stuff. Mainly i was experimenting with zbrush trying the new systems which allow you to add clay and remesh the object and keep up working on it, so it unlocks some things. I want to be able to do full sculpts etc for various reasons, mainly for my personal projects to have good representation of a design [ for example a true functioning engine ].
For work i seldom use 3d and stuff but i am sure a good knowledge can increase your productivity which is good for business
. If you are faster in creating a construciton in 3d rather than by drawing [ at specific point of view] then i guess 3d is the way to go, but for me i still create a construction faster by drawing than sculpting, so it hasnt find the way into my main workflow yet