Some writers like to outline what they write before they write it. I'm not one of them.
I like to write for the same reason I like to read: to see what happens next. I like to go for a ride and I don't enjoy it if I know every twist and turn of the road.
When I was trying to finish my first novel manuscript (henceforth referred to as The Book You'll Never Read), I outlined it. Gone was the joy of discovery, and most of the fun of writing. Each chapter became a step toward the goal of ending the book rather than the joy of travel. For me at least, the outline was a set of railroad tracks as opposed to the open road. I like the open road; I might not take the off ramp to every interesting spot along the way...but having the option is freedom.
I love freedom.
I did find one key--a key on the keyboard--the liberal use of which makes not outlining possible. I'm never afraid to use that key if I don't like where my ride went.