Why do Germans speak the German language?

Germans speak German because it's their native language, just as English is the native language of people in England and French is the native language of people in France.

Here's a bit more detail:

* Historical Development: The German language has evolved over centuries from various Germanic dialects spoken by the Germanic tribes who migrated to the area now known as Germany.

* National Identity: German became a unifying force for the various German states as they consolidated into a single nation in the 19th century.

* Cultural Heritage: German is deeply ingrained in German culture, literature, music, and philosophy.

* Education: German is taught in schools throughout Germany, ensuring that future generations continue to speak the language.

In essence, Germans speak German because it's the language they grew up with, the language they learn in school, and the language that binds them to their cultural heritage.