It’s illegal almost everywhere in the US to have a “natural” burial. There are laws on containers, treatment, and where the deceased can be buried. Dead bodies, while very biodegradable are also toxic and tend to get dug up and parts drug around by animals, up rooted by trees, or dug up during construction after the property is bought out. I do agree that funeral homes are soulless vultures who fleece people in mourning though, the last “fuck you” from capitalism.