I write for my partners (I also write for me and the story itself) but if I'm not happy with the writing itself, then it doesn't feel right. If you're not happy then of course the writing is gonna suffer. Even if I'm not always happy with my posts (3/4 times I am happy though) if my partner and I are on the same page and still having fun, then it shouldn't matter, not every post is gonna be awesome, nor do they have to be.