You ask why parents send kids to learn singing, or any musical instrument?
For exams? For competitions? For life time skills? Perhaps. I have done and got them all.
I can tell you why.
Music gives me such feelings of well being.
The diligence and persistence prepare us for challenge in life.
The creativities give us a foundation to start anything with new ideas.
The voice that people listen when we talk.
Most important of all, it makes me happy.