may I ask why we have such a big discussion? Noone said english is not allowed anymore in the description of Earthcaches. We just have to add a localy understandable language. Is that such a bad wish. I do not think so.
The owner who want's to have visitors form all over the world can and should add english as a second language. If he doesn't, he will suffer from his Earthcaches visited only by locals... So why not have the listing in English and Local? I wouldn't like an Earthcache in Germany having only english and the other way round I can understand that local cachers in other countries want cache descriptions in one local language. Why not?