Ice cream cones are for children. If you go to the ice cream store and order in a bowl you are not a child. A child should have a dripping ice cream cone in one hand and a balloon in the other. Alternately a giant lollipop and one of those paddle games with the red ball on the string.
The cone is no a very stable shape to be carrying something.
You'd never drop your ice cream on the ground if you were eating it in a bowl.