Hi,
that's right. Translating the documentation would be really a lot of work. The documentation in general is one of my biggest problem because maintaining it is a lot of work.
The other problem with a localized documentation would be that I update the documentation with almost every update. So it would be also a lot of work to keep the localized documentation up to date.
This would be easier for a app which only releases one feature update every two years. Localization is probably one of the reasons why the big software companies only release very few feature updates.
By,
Martin