Emotions affect creativity on every level. Even if you are unmotivated, that will affect what you produce in the sense that creativity is fuelled by emotion. If you take a look at the best well-known artists of the centuries, their work is praised on how much emotion has gone into their work. Pretty much everything we create is based on and needs an emotional response. So it seems creativity is a celebration of our inner emotions, and we should respect that in every way we can.