[mybodymychoice]

> Why is it not possible for your family to sell your body

Because it's your body, not your families body. A law allowing the family to do this against your wishes will never pass.

[sowbug]

> Because it's your body, not your family's body

A dead person can't own property, which is why wills, trusts, and laws of intestate succession exist.

[BurningFrog]

That's not why.

You also not allowed to sell your own body.