Why do we read the Bhagwat Geeta in Sanskrit ?

Why do we read the Bhagwat Geeta in Sanskrit, even though we don't understand anything

This is beautiful story - if inspired please forward, else keep it can't
say when it might inspire you!

An old Farmer lived on a farm in the mountains with his young grandson.
Each morning Grandpa was up early sitting at the kitchen table reading
his Bhagawat Geeta. His grandson wanted to be just like him and tried to
imitate him in every way he could.

One day the grandson asked, "Grandpa! I try to read the Bhagawat Geeta just
like you but I don't understand it, and what I do understand I forget as
soon as I close the book. What good does reading the Bhagawat Geeta do?"

The Grandfather quietly turned from putting coal in the stove and
replied, "Take this coal basket down to the river and bring me back a
basket of water."

The boy did as he was told, but all the water leaked out before he got back
to the house. The grandfather laughed and said, "You'll have to move a
little faster next time," and sent him back to the river with the
basket to try again.

This time the boy ran faster, but again the basket was empty before he
returned home. Out of breath, he told his grandfather that it
was impossible to carry water in a basket, and he went to get a bucket
instead. The old man said, "I don't want a bucket of water; I want a basket
of water. You're just not trying hard enough," and he went out the door to
watch the boy try again.

At this point, the boy knew it was impossible, but he wanted to show his
grandfather that even if he ran as fast as he could, the water would
leak out before he got back to the house.

The boy again dipped the basket into river and ran hard, but when he
reached his grandfather the basket was again empty. Out of breath, he
said, "See Grandpa, it's useless!"

"So you think it is useless?" The old man said, "Look at the basket."

The boy looked at the basket and for the first time realized that
the basket was different. It had been transformed from a dirty old coal
basket and was now clean, inside and out.

"Son, that's what happens when you read the Bhagavat Geeta. You might not
understand or remember everything, but when you read it, you will
be changed, inside and out. That is the work of Krishna in our lives.."