Question: 
Why does everyone have to do piano?
Answer: 
By starting students on piano we are giving them the best chance of success for a life full of music making. Piano is a great instrument to get started on. It is easy to make a sound on and the layout makes it easy to apply musical knowledge to. Consistently around the world you find that many music leaders, conductors, composers etc. are capable piano players. Learning the piano greatly enhances all other music learning. In fact increasingly top teachers of other instruments won’t take young children as students who have not already learnt piano. No one wishes they did less piano.