"Good authors, too, who once knew better words now only use four-letter words writing prose... anything goes. "
Beyond sharing your knowledge with others, there are many reasons to start writing. Explore what information you might want to share and see if others could benefit from your knowledge.
It has been said that a monkey, randomly typing away on a typewriter (in the days when typewriters replaced the pen or plume as the preferred instrument of writing) could re-create Shakespeare-- but only if it lived long enough (this is known as the infinite monkey theorem).