> In Argentina most toilet paper is very thin, and as a result people uses a lot more.

This is no different than the false economy of single-ply in North America: you end up using the same mass (volume?), you just have to have more pulls.

While not a topic I have quizzed many people on, I would hazard to guess that most folks want a certain thickness for their wipes. With two-ply you can achieve that with x revolutions of the roll, while with single-ply most people simply do 2x.

I'm not quite sure if single-ply really saves anything.

So for Argentina, are people really using more, or simply doing more pulls to reach the same thickness as the thicker-papered Americans?

It's hard to say. First we have bidets in most households, so people uses lots of toilet paper to get dry after usage. Second, Argentina has a bad economy so people tends to go for the cheapest.