You've spent years hearing your parents go back and forth about what they want to happen when they die. Your dad wants to be buried with a full traditional Mass, your less-religious mom either wants to be cremated and have her ashes thrown out to sea. Or, if your mom is like my mom, she says, "I don't care, just throw me in a dumpster or something" (see where I get it from?).
If someone you know is kind of "iffy" about the whole "what are we gonna do with my body" thing, here's an idea: Bios Urn ($145), which uses your ashes to help grow a tree, which is a nice way to honor the departed and continue their life after they're gone.