It saddens me that this is the "Discworld" author, Sir Terence David John "Terry" Pratchett, OBE, the second most popular British novelist after J.K.Rowling. Of course he is also a self-described Humanist and an Honorary Associate of the National Secular Society. He joined others in protesting the recent Papal state visit to Great Britain.
Thus it is not surprising that he feels that life is a disposable thing, I presume. Since he has announced the unfortunate onslaught of Alzheimer's Disease, I predict that he too will seek to end it before he is called home naturally. Very mixed feelings upon my part.
He’s suffering from worse than Alzheimer’s.