Artists like art. What do people who like art do? They collect!
A number of artists collect art as well as make art, and I am one of them. Sure, I could fill the walls of my house with my own art, and I have. What interests me however, are the styles and techniques of artists other than myself. I started my art collection with two pieces of art by Don Howard a number of years ago. His work is completely different from anything I would ever do, and I love it! I have a Sun God as well as a piece of his tribal art.