It’s that way because languages grow naturally and are part of a culture. Although if you have breakfast with people from different parts of Germany or even just different households, you may find yourself arguing about the nouns of a popular nougat cream brand. It’s quite controversial for some reason.

Whatever the case, the same can’t be said about spelling, however. Writing is often reformed in many languages many times and it generally works. A language changes the way we think as much as the way we think shapes how we speak. You can’t really reform how people speak from the top. It either happens or it doesn’t.