For the sake of doing it.

Master Hoshino often gets asked why do Yamabushi training, and his answer is always the same. You do Yamabushi training to do Yamabushi training.

On that note, you do what you do for the same reason a child plays with toys. To play with toys, and maybe learn a few things along the way.

Do things just for the sake of doing them. That’s what they’re there to do. And who knows, you might just learn something along the way.