It won’t be easy, you can never know the depth of the musical instrument without the aid of a teacher, you can know the basics but there will be a lot of skills you will lack. I think it pays to learn music with the aid of a teacher. You can learn on your own as a way to practice what you’ve been taught that way you will get better.
Yes they should because music is therapy, it keeps the mind and soul intact, learning to play musical instruments helps the students to feel like a part of something important. It also helps keep them busy and away from bad gangs.
I learned to play the piano as a little girl, I used to play at school recitals then and even now whenever I need to clear my mind whether I am angry, sad or happy I play it till my fingers get numb.
I love listening to piano and guitar because it gives me a sense of peace, the rhythm somehow inspires me whenever I listen to it.