Unless a loved one accompanies the body to the furnace, requests to view it one last time before it goes to be cremated, watch the casket be placed in the zapper and observe it's imolation, how can you be sure what they give you in the urn is actually the deceased ones ashes? It could be someone elses, it could be probably almost anything unless you're familiar with what ashes look like. I'm not trying to be a jerk, but really, an unscrupulous undertaker, preying on people at the most emotional time of their lives, is not beyond reproach for doing a switcheroo or some other dastardly deed. Remember that creep in the South who just dumped the bodies all over the woods (I think it was dozens or hundreds over a decade or two) to collect the service fees and avoid some of his costs?
Okay- how about this.... when you die, have your family leave you at home for a week and a half, just to make sure you're all gross, icky, and unusable. Heh? Prop you up at the table, and business as usual for a week and a half. Then, off to the furnace, or nuclear reactor core. I'm liking this.