How about both? If you don't have a bucket of dry leaves handy, you still need something to wipe with. No matter what you do with it, paper is always worth saving. Even if you're building no fires with it, its value as insulation is not to be underestimated. 'Washing yourself' only works where you have plenty of water of spare, not always the case, as millions discovered recently when so much of the country got hit with a giant storm and deep freeze. Will you drink that water, without which you'll surely die, or will you wash your ass with it?