Greetings, Ali
Since you do ask for critique, I have several questions, observations and suggestions that you can take or toss without fear of offending.
First a question. Why do you place
Somber in quotation marks. It seems totally unnecessary, unless I'm missing something in your intent.
I think your opening remarks seem too lecture-ish for a piece of free verse. And you haven't created the context for them, except in the title. May I suggest you make the whole thing more personal to the mortician by doing something like what I suggest here?
QUOTE (Ali zonak @ Jun 28 17, 22:04 )

A Mortician’s “Somber” Reflections **
Here I am with another mortal on my bier.
Cradle to grave, the our destiny of man
is one from which there’s no escape[.]
Born, we were he was without teeth in our his gums[;](,)
now it is the tooth of time that tears and gnaws.
Aging gracefully? Oh, such a fleeting dream;
man finds himself We find ourselves a prisoner of old age.
Dogs may grow old without showing their age--
some ancient ones still run, but this one lies still.
Look--this shadow of a man, once stout, his legs
are withered, stiff; the skin hangs loose
and saggy like that of a plucked goose;
his neck would be was too weak to hold the his head erect.
Once he was a youth with a full head of hair,
but now, one we find(s) only one or two, maybe here
or there, not worthy of clippers and shears--
except for those bristles in his nose and ear.
[Stanza break]
Well--at last he is beyond all earthly care,
yet I serve him by doing what I do best--
Hot diggity dang! Doesn't that this guy look(s) great?
Again, please take or toss, in Light of personal choice, Daniel