I've always told my students that when you open a book, you embark on a journey. Sometimes it's a brief jaunt of only 32 pages, but often the trip stretches out across 100, 200 or even as many as 700 pages. But the fun part isn't "The End". When you take a vacation, you look forward to adventure and fresh scenery. You're not thinking "When will this be over?" For me, writing fiction is like going on a journey, but without a well defined road map or a GPS or even reservations at some motel or bed & breakfast inn along the way.
I've heard the arguments for outlining a book before writing it and they make a lot of sense. An outline will keep you on track. An outline will help you cover everything important. An outline will ensure you make it through to those two big words, "The End". And granted, those are strong arguments when you're trying to complete a WIP, especially if it's your first. Perhaps I should have outlined my novel before I started working on it. Then I might have finished it by now.
But alas, when it comes to writing a work of fiction, I prefer to see where my story leads me. I know my ultimate destination - that's important. But if I stick to the outline, a character waiting in the wings may never have an opportunity to make his debut and it's possible he or she may have something very important or fascinating to say or some pivotal task to accomplish to add depth or an element of mystery to the plot. It's also possible that an important sub theme - one that I was totally unaware of - may never come to fruition. I enjoy the surprising twists in the road, the steep rises and sudden dips, the startling bumps and unexpected side trips. Without a well defined map, sometimes the journey to "The End" takes a little longer than expected. But man, what a trip!