"Dream Deferred" by Langston Hughes - Theme

"Dream Deferred" has an amazing message. It caused me to contemplate what will be the result of the dreams we let go. With they "dry up like a raisin in the sun?" or "does it explode?" What does the speaker mean by this - "does it explode?" I think his message is that some of lost dreams can come back to haunt. When we are older in age, we will look back and wish we had taken that chance. It reminds me of "The road less traveled by" mentioned in a Robert Frost. The speaker of "Dream Deferred" is trying to point out that our dreams are worth attaining. They very well may cause us pain if we don't at least try to achieve them. I believe that as long as we try to attain them, the worst that can happen is that they will "dry up."