1) to dissipate superfluous and obstructive nerve-force;
2) for the direction of motion in others, both men and animals;
3) for the communication of ideas;
4) as a means of expression;
5) for purposes of record;
6) to set matter in motion (magic);
7) as an instrument of thinking;
8) to give delight merely as sound;
9) to provide an occupation for philologists.
(c) A. Ingraham Swain School Lectures
Вот 8 и 9 - это по мне!