Speaking to someone trying to say something that is true but could hurt them is hard to do. That is why one can choose to speak or just endure until they can to maintain a good relationship. But a poem can help in that situation. If a poem is related to the truth to be told then the poem could be used to convey the message. One can share something about the content of the poem without being judged too quickly. This is one benefit of poems, to express feeling.
Another one is that you can know something new you have not experienced or known before. It is a good adventure.
When you yourself will write your own poem, you can be able to express how you feel in a way that will make you think how to do it. You can just write anything just like a letter but the poem has a different way that helps you release all that you are keeping inside. A poem that helps your emotion and also makes sense with the way it is made. That is why a poem can also challenge you to try a new area you had not been to before and is lazy to try.
Poems are not easy to make so it may not appeal to someone at first but the challenge that has can make them look at it with a different view. That is why poem could train your brain and give an exercise to it through poetry.
It is also one fact that one who read poetry can have empathy though this is not limited to poetry. One reason that many also like poems than other literary works is that they are short. They also cover a broad topic so you would have a variety of information.