One further benefit is that it allows you to optimize what little toilet paper you do buy towards strength. Normally there’s a tradeoff. Softer and less abrasive toilet paper is nicer on the bum, but it comes apart more easily. It can leave bits of toilet paper dust around and even tear at the most inopportune time. But if you’re only using a little to dry off, you can buy the strongest stuff you can find, regardless of how harsh it might be to use as regular dry wiping paper. Who cares if it feels like sandpaper if you’re just using it to pat yourself dry?
One further benefit is that it allows you to optimize what little toilet paper you do buy towards strength. Normally there’s a tradeoff. Softer and less abrasive toilet paper is nicer on the bum, but it comes apart more easily. It can leave bits of toilet paper dust around and even tear at the most inopportune time. But if you’re only using a little to dry off, you can buy the strongest stuff you can find, regardless of how harsh it might be to use as regular dry wiping paper. Who cares if it feels like sandpaper if you’re just using it to pat yourself dry?