Mine is almost the opposite problem, really. My favorite kind of fic is introspective and looks back over long periods of time, so getting to see everything through the lens of the Happy Cloen Ending really helps me to focus and see the arcs.

On the other hand, it makes it much harder for me to develop the little snippets of ideas I've had for, like, things with actual PLOT, because... well, we know how it ends, don't we?

But I can't stay away from meaningless fluff for long.