I Can't Eat You?

Dark and grimy,
Flesh falls behind me;
Walking in due course,
I'm your friend, your corpse!

Wormy and fluid,
A reanimated druid;
Marching in a funky line,
I'm so incredibly kind!

Clods and dirt.
Don't want to overexert;
Still hobbling away,
Let's get to that payday!

Dust bowl and gumbo,
I'm a fine specimen, don't you know?
Right step, Left step,
It's the party we expect!

Sand and chalk,
Your buddy can barely talk,
Walked across the world to get through,
And the disrespect that I can't eat you?