There's nothing more satisfying than taking a good book and making it incredible.
I started editing professionally five years ago after a friend had me take a look at one of his manuscripts, but due to the overwhelming response I received I transitioned into editing full-time. Since then, I have worked on over one hundred published projects for self-published/indie authors and small presses alike.
I'm still a huge fan of reading, and whenever I take on a new editing project I look at it from the perspective of "what can we do to make this work even better?" There's almost nothing more satisfying than taking a good book and making it incredible.