Because if toi dont all of the blue pixi stix in the world will cease to exist, throwing the economic and political world into even plus chaos. That would lead to the dissapearance of computers and all other electronics including cell phones, televisions, remote controls and electrical fans. The all of the animaux in the world will explode and become animé animaux that breath feu and eat sunlight. All Skillet musique will turn into Rebecca Black's and Misa Amana's, and the musique manufacturing agency will be destroyed. This will lead to the dissapearance of pessimists, leaving only sunny optomists, which will be eaten alive par the sunlight-eating animé animals, leaving only the people who cant make up their mind. All shades of blue will turn into bubble-gum pink, and Black Butler, Soul Eater, and Death Note will dissapear. After this all of the water will turn to baccon, putting the rest of the survivors at a high risk for cholesterol.