That’s a great question to ask before making any decision.
If I am thinking about buying a new camera, for example, I need to know why. The flimsy “because it takes better pictures” argument won’t work. Or it shouldn’t.
Why, really, does it matter if I do or do not buy the camera?
If I am starting a new business, or I need to do certain things in my current business to ensure it succeeds, the “why?” question is critical. Without it, there may not be enough motivation to do what is necessary.
With a strong “why,” anything is possible.