Does A Piece of Art Need A Title?

When I go to galleries and see a work titled as "Untitled 1", etc. I often wondered what goes through the mind of the artist? Surely the artist must have some kind of idea what the piece he/she is producing.

For me, the title of my work drives the entire process; from initial concept to sketches and the actual piece. For me, the title is an important and integral part of how I work. The story of the piece lies in the title. It is kind of like a hidden code or message from the artist to the viewer. If you can "crack" the message of the title, you have delved into a deeper part of the piece and to me, you have made a connection with the artist.