@Willow Tree Because the earth needs more pure and wholesomeness.
You could always draw them without the hat. Though they wear it most of the time, there's times when they would like for the hair on the top of their head to not be tangled beyond belief for a day or two.
How can something so pure and wholesome exist in the face of this earth. TuT
I wish I can make more art of them but that hat will be the end of me. >_>