embalming only makes sense if you think you're going to get bodily resurrected during the second coming of christ with no changes to your body from your dead state. otherwise it's pumping you full of toxins, then putting you in a box which will seep those toxins into the ground.
it doesn't even seem like good christian theology. there's no reason why your bodily resurrection wouldn't also involve restoring your body to what it was when it was alive instead of what it looks like right now while it's dead.
anyway, personally, what's important to our theology is the reincorporation of the body into the ecosystem. for the body to be fed upon by decomposers, especially fungi, and live on in their mycelial bodies, finding a final unity with the leviathan who composes the earth.
this means that, if we die, we would want to be burried in some old growth forest grove with no coffin and no embalming fluids pumped into our body and get some fungal spores seeded atop the body. especially the sort which'll connect to plant roots to share our nutrients.
the preservation of the body after death is simply perverse to us. it is the height of impiety. the disruption of the cycle of decay and degradation allowing for and producing new life. through death comes the foundations of flourishing. it is the way of the world.
(of course, decay and degradation don't only come in the form of death, so death isn't required for this cycle, but we digress in this regard.)