Those are the reasons to write. Writing is one of the most powerful and accessible communication devices we have. Writing allows you to meditate and polish ideas before releasing them. Writing allows ideas to be clarified and buffered between the giver and the receiver. Writing allows time for words to be re-ordered, reconsidered, replaced, improved, and made more powerful.
Writing is power.
It can generate new energy and it can be a catalyst for personal change and enlightenment. Writing is reaching out, taking risks, exploring the world, and shaping the future. It doesn't really matter whether you write on a yellow pad, a computer screen, or a collection of napkins and envelopes. There are several steps in the process of becoming a writer. Write about what you know.