Why do editors choose to become agents?

People in the publishing industry tend to play musical chairs. Agent Kim Lionetti of BookEnds, LLC explains why she left Berkley Publishing and become an agent at BookEnds, LLC three years ago. Her post has good insights about agents' motivations and some of the lesser-known pitfalls of being an editor. If you read my previous post, "A publishing industry history lesson," this one adds food for thought about compensation in the industry...