I believe writing is important  because it allows someone to express their beliefs and values in a written from that others can look at.  Writing allows others to see your beliefs.

Writing is important because it can help someone to write down and organize their thoughts in a way that others can understand.  Writing can also help someone organize their thoughts.  Writing is also helps you to persuade others.

I would convince my 10 year old child that writing is important., by showing him the great stories that have been through writing. I would tell him or her that writing allows you to share your imagination with others.