We need to be creative because creativity is what inspired the world to what it is today. For instance if no one thought of the square of being an obsolete form, the wheel would have never been found. Or the story about Columbus, he was regarded crazy at the time for egg theory about the world being a ball form instead of the flat map that everyone thought it was no one the world would be still be a smaller place for all civilizations.
There are numerous other historical examples why creativity is important but the real question is why do need to be creative. In my opinion, as a business student in SBM, we need to be creative to separate ourselves from all the other business students in the world. There are too many business students in the world to fill up the successful positions and with somewhat similar backgrounds and educations we need to be creative to set ourselves apart from the crowd.