PROS:
Increases the capacity
of your memory, enhances your coordination and abilities like developing your ear for music (not only musical ones!);
Teaches you perseverance(настойчивость; усидчивость);
Fosters your self-expression, confidence and relieves stress;
Exposes you to cultural history;
Improves your reading and comprehension skills;
Improves emotional well-being.
CONS:
1) Not everyone is musically inclined (or has musical inclinations); Forcing an instrument upon someone is an unnecessary burden that could provide no benefits to certain people. That might not be your calling. Your calling might be that of a construction worker, a firefighter, a weather forecaster whatever.
2) Learning to play takes a lot of time and energy;
3) Children can become depressive because of hard work.
