Like that is indeed a weakness as a writer to wait for the right mood but not much is worse than you putting your all into a post and getting hit with a terrible reply. INSTANTLY kills the mood to continue. Might be what they're avoiding. If you do not like how long this particular person takes to reply, then just stop the rp with them
I don't mind at all if partners take more than a few weeks to reply. We all have lives and have to get to a quiet place to write. But when they start acting like they literally CANNOT write unless everything is perfect, I'm already looking for a way out. And if I waited for the stars to align for me to write a post, I would have never written anything. All I'm saying is that writing only when it 'feels easy' is particularly inefficient when it comes to realizing a story
Also I'm not giving shit to any particular person right now, just ranting (: