Most people buy a camera to take pictures - which is what it is for. Photographs of family members, portraits, landscapes, animals, magazines, newspapers, etc. are the main purposes, to either put on the Web, business purposes, or just family stuff. However, there are many other ways and purposes the camera can be used - and lots more fun.
One of the innovative ways the digital camera can be used is for many areas of education purposes. Lectures use them for discussion clarity, such as traveling to Italy or to see the inside of a chemical. Many digital photos are used for medical teaching, such as diagnosis and treatments.