This was a deep, sad poem.
I like the flow of the poem and the use of a rhetorical question which is a great way to get the reader thinking about what you are thinking and also provides them with the opportunity to think about their own lives.
A part in your poem that struck out at me was this part:

Some talk about the valley of the shadow of death...
I see it as a necessary part of what is left...

Such a powerful way to end the poem by linking together what some people think to your own patterns of thinking!
5/5 from me
Keep it up!