A fellow blogger had something to say that really resonated with me (thanks Windy). She was talking about how plotting and planning isn't as fun for us pantsters because it's only through our slightly disorganized process that we get to discover the story. I have to agree with this sentiment.
My favorite moments are when my characters surprise me, doing something even I didn't anticipate. Though I'm the one writing the story, the tale is actually unfolding on its own, using my mind and fingers as a portal to the page.
Thinking about this concept more, I realize that I get bored easily if a storyline is too obvious. If I can tell where you're going with things, there is no surprise and I'm more apt to skim than really read. In fact, the most memorable stories are those that completely surprised me throughout (Deathday Letter, I'm looking at you).
This is why I'm a pantster. I let fate have it's way and laugh crazily throughout the ride. And though it means more work during the editing process, I wouldn't have it any other way.
If you're a pantster, why do you choose this path? If you're not, why not?