I'd like my CrAYoNs back please.

Why as kids are we given crayons and paper and told to create whatever we want, and as soon as we become teenagers we're given a worksheet and a calculator and told to do exactly as told? Why are we taught creativity when we're young just to have it all stripped away as soon as we truly begin to learn how talented we are with our passions in life? The older I become, the more I am losing all the creativity I once had. I'm becoming a "grown up", but really i'm just a little kid trapped inside and older kid. I want to be able to bring my creativity back out. I'd like my CrAYoNs back please.