Because having a snap opinion on someone or something is important. At least, that's what my PR people have always said. First impressions tend to reveal current marketing trends, too.

[ Shu shakes his head, taking in a calming and cleansing breath... then releasing it. ]

Also, strangers won't get to know me. I'd rather they keep a pristine image in their minds.

[ Not saying Shu isn't a pure being, but the whole Image thing is pretty important to a pop star. ]