Why do we need Design ? ?

The big question is DO WE EVEN NEED DESIGN ? Is it a term that we need to define at all? Design is a way of living, a need to live life in a particular way, aided by particular things ,but it is NOT a necessity .

An example of this would be the evolution of mankind itself. The tools that existed before hunting and the clothes that existed earlier was also design . The paintings on the walls by the cave men was also design . Survival of the fittest is also design . Yet we do not keep terming it as design. One needs to be constantly moving and that is design .