I think if you are looking for a message in this poem, it has to concern the stubborn choice of the speaker to live in spite of what is happening to his or her life and the recognition that, as it says in the final stanza:
I could've died for love--
But for livin' I was born.
In a sense, the message is one of hope as the speaker, and by implication we, as readers, realise that we could die "for love," but actually there is something about the tenacity of the human spirit that rejects such an easy escape, because we were born "for livin'," which means we have to face the harships that life throws at us and endure them. However, in spite of these massive hardships, the overwhelming message, conveyed through repetition, is that "Life is fine!" and that, in a simile that conveys just how fine it is, we are told that life is as "fine as wine." The poem ends with a recognition that life is hard and we will suffer, but still the speaker will be "dogged" if we see him or her commit suicide. You will want to comment on the use of the final simile and the repetition in how this message is established and supported.