Poetry is a way to express emotions and thoughts. Poetry can build on senses giving it deep access to memories and feelings. Many people can tell stories that would be hard to understand through poetry. It helps them express things more vividly. Poetry can touch up to millions of hearts. Some are powerful enough have a society change their views on a topic. It is not for a specific age group. Poems are created for all ages. Here is an example of a piece by " Gemineye " from the show Def Jam Poetry that aired a couple of years ago.
http://www.youtube.com/watch?v=kozv2POJS0I