Americans, by and large, are quite bizarre when it comes to discussing anything that takes place below the belt. When I mentioned working at Google, I have had multiple people say to me, "I heard the founders at Google are OBSESSED with toilets and import special models from Japan." As if one has to be stark raving mad to use a modern toilet from Japan, instead of the old fashioned toilet which was probably imported…
From what I read on the internet 25-40% of people out there seem to stand up to wipe.. and I have to believe that's largely due to people never discussing how they use the restroom.
I prefer Western toilets (I'm American), but think the squat-strategy has a lot of sense to it: you never touch anything, and the squat position angles your body "just right" if you know what I mean. It's just a bit awkward for us (Westerners) when you're not used to holding that body position, though.
There, now I can cross off "get into public internet discussion of pooping strategy" from my life goals list. :)