Limited in what cases qualify for legal ending of one's own life or helping someone else do so, M-Bear.  I make no judgments on this as I can see some arguments for both sides.

My parents live in Oregon.  My father is "for" the law on grounds of people making their own decisions about their own lives.  My mother is "against" on the principle that she's seen people die in her life who experienced some wonderful "clarity" moments with their loved ones very close to death.  These might not have happened had a euthanasia been involved.