I guess it has never occurred to me to care what happens to my body once I'm done using it. But it does make sense that you would want to be ID'd, for the family to have some closure. I always have my wallet on me which has several forms of ID but if that was lost I guess they'd have to figure out who I was by some other means.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman