Considering I grew up around death (my father is a funeral director/embalmer), this topic interests me somewhat.
It kind of pisses me off how easy it is for people just to piss on others for simply doing their job. My father works his ass off day and night, working long hours, barely seeing his family, just to help people say goodbye to their loved ones. When people start calling him a "vampire" and his occupation, which he has worked himself grey for, a money laundering scheme, I get angry. People have no idea the amount of stress and work it is to take care of something like the dead.
You think you'd help the earth by dumping your corpse in a ditch and just leaving it at that? Well aside from the obvious sanitation problems, think about the people who are having to do this job. It's thankless, completely thankless, because some twats see them as "evil" or "unclean" when all they're trying to do is put a body to rest, whether through "green burial" or traditional.
Granted, I will admit the prices for caskets and ceremonies are too high. Even my father admitted as much. There is no way it should be that expensive, but if people want their loved ones to feel comfortable (despite being dead), than that's their business, not ours.