Choose what you do

Life's a messenger

^^
Or perhaps we are life's messengers? We'll never know. lol
I think what your suggesting here is destiny and all that suchness..? My interpretation anyways.

Loading what we introduced

^^
That 'loading' really has me pondering this. Perhaps I am to drowsy to be analysing poems but, anyways.. here goes:
loading = creating/building?
introduced = invented/created/ our experiences?
So life as a messenger (destiny/fate?) is recreating our life based on what we have experienced and what pathways we have chosen..?
I hope I'm not completely off the mark here.. Eek!

between birth and death

^^
We only live one life - we are born, we live, we die. Between life and death we live - choosing different pathways that will inevitably end in our death.
See that would fit in with my theory. But obviously, I could be completely wrong.

Overall;
Well hopefully I haven't completely missed the meaning of the poem and made one up of my own. LOL
You have chosen great vocabulary that (to me, at least) was thought-provoking instead of straight forward - which was enjoyable. (:

Maybe add a comma/semicolon or something between lines... not absolutely necessary, but I think a pause would work okay between each line. And add a fulltstop to the end - I think this will emphasise the 'death' statement by offering a finality about the piece. Just suggestions.

Brilliant as always. 5/5