It's illegal to have your remains decomposed naturally (or one of those cool new methods like composting or alkaline hydrolysis). You're legally required to be stuffed full of embalming chemicals and buried in a box, or cremated, polluting the air and wasting bioavailable nutrients, to be turned into high pH, high sodium ashes.
I think this is because the laws were mainly created by Catholics (this is Louisiana, where we have parishes instead of counties), and people are still too superstitious to make sense.
A friend of mine has his will or whatever say in regards to his body "gut me like a fish". And I'm with him on this. Harveat whatever organs are still usefull then just use the rest of me as fetilizer. No need for my body to stop being useful to someone somewhere or hell even being useful to the rest of nature.