Goetze 22, Kramer 23, Kroos 24, Muller 24, Draxler 20, Boateng 25, Hummells 25, Ozil 25, Schurrle 23, Howedes 26.. Those are just players who were in their world cup squad.
They have tons of young talent on top of all of that. They are going to dominate for years to come.