This post was sparked by a comment Alexis Grant made a few days ago, in which she said that she, too, loved editing.
I don't hear that from too many people.
In fact, what I hear most of the time is how much people HATE editing. But I don't, I adore it. There are times when I think I like it better than the actual writing.
The truth is, I'm really more of a words person than I am an ideas person, so getting the story down on paper in the first place can sometimes be a pretty big struggle for me. But give me pages and pages of prose that need to be polished up (and cleaned of unnecessary alliteration), and I get all excited. It's like sculpting to me. I can take this mass of verbiage that has "potential" and reshape into something that's actually fun to read.
I enjoy tinkering with words and experimenting with turns of phrase. I love to take a clunky scene, figure out what's wrong with it, and turn it into a valuable part of the story.
On a grander scale, I have learned that I really do have the power to completely rework a novel if I have to. When I was writing my last novel, I got to a point where I realized the beginning was much to slow and I needed to bring the actual mystery forward more. To make such drastic revisions, I printed out the pages and cut apart all the sections so I could try them in various configurations. When I found the one that worked, I taped all the sections back together and used that as a template while I reworked the MS file.
It was a blast - when I was done, I felt like I was on top of the world.