Reasons Why ???

I was wandering the other day what makes a person create a video to their song. Was it a random burst of creativity or whether there was any meaning behind it. So ..... I decided to Google it. After reading some interviews with bands such as Coldplay and Oasis, I understood that the artist and managers need a good video for it to sound good. As weird as it sounds, it kind of makes sense. More people are inclined to buy the song if they see a good video, which is true. I know this is true because I literally just bought a song off of iTunes because i saw the video on Youtube. Therefore I understand the importance of making a good music video.