I think about this all the time! Toddlers throw food on the ground, grab handfuls of sand at the park, dump water out of the bath, etc. WHO CARES! Is it so horrible that your child is experimenting with textures, gravity, and defiance? I cannot stand to be around moms who slap their kids hands or sternly say "NO!" when a kid is joyously running around squealing or splashing in water. It makes me boil.