Consider this story from Belgium:
Deaf twins who discovered they were going blind and would never see each other again are euthanized in Belgian hospital
"A pair of identical twins, who were born deaf, have been killed by Belgian doctors after seeking euthanasia when they found out they would also soon go blind.
In a unique case under the country's euthanasia laws, the 45-year-old brothers, from Antwerp, chose death as they were unable to bear the thought of never seeing one another again.
They were euthanised by doctors at Brussels University Hospital, in Jette, on December 14 by lethal injection after spending their entire lives together.
Euthanasia is legal under Belgian law if those making the decision can make their wishes clear and are suffering unbearable pain, according to a doctor's judgement... But this case was unusual as neither twin was suffering extreme physical pain or was terminally ill."
And later in the article: "Just days after the twins were killed, Belgium's ruling Socialists tabled a legal amendment which would allow the euthanasia of children and Alzheimer's sufferers."
Slippery slope... slippery slope... that's all I can see... coming soon to a country near you.