I know for some people, it's weird to use tissue instead of water to clean yourself after using the toilet.
And for Americans (or probably most people in the world), using water to clean yourself is weird.
Their reason of saying that it's weird because you're supposed to feel "dry" after using the toilet, and the fact that you wet yourself with water for cleaning purpose doesn't make any sense.
But here's the thing. You don't clean your body by simply using towel to yourself, right? You need to take shower, to use water to at least clean your body. Sometimes you can even dry your body without towels, which is quite weird. But you get my point. You don't clean yourself just with tissue, because basically even your body realized that using water is way cleaner than just sweep the sweat away with towels.
Me? I use both.