Kitchens are the heart of the home. Kitchens are used to create meals to fuel the people of the home.
The living room is a multipurpose space. It can host friends for entertaining, or you can relax on the couch and watch television.
Even though you may do homework or watch TV in your bedroom, the main purpose of the room is to sleep and rest at the end of a long day.
An office is the place to work. Some people may set up temporary offices on their kitchen table, but it is best for work to have its own space to separate your work from your personal life.