Because it’s basic to humans. Some like it and are drawn to it more. That’s what I gained from this terrific article, which tells the story of the illustrator Robert Fawcett and ties it into what motivates the artist.
I think every artist that has spent time developing their work has a specific look too it, but as Fawcett points out above some stop growing because they no longer see the world around them.
More here. Make sure to check out Fawcett’s incredible eye for detail.