Exactly, and other newer consoles (e.g. PS3, Xbox 360) are too powerful to emulate well with current computers. The ones that aren't (e.g. Wii) have had the common key found. But just because it was found for the Wii does not mean it can be found for the 3DS; there was a flaw in the Wii's security which allowed obtaining the common key.
Anyway, making a 3DS emulator is useless for pretty much everyone but pirates. It doesn't help the cause of 3DS homebrew at all.
Also, metroid0: There is no need to centre all your posts and include a picture in them. It's a tad annoying.