A Question About Writing

Yesterday, I asked a seemingly innocuous question on Twitter and was completely flooded with responses, many from quite famous and successful writers. I was surprised by the wave of responses, and found it all very interesting.

So I thought I’d ask the question here, as well, for writers of fiction only, please.

What part of the writing process is your favorite? I’m talking about the actual writing, not the aftermath or the effects of it. During your writing of a story, what is your favorite part of doing that work?