The answer, of course, is when the paper in question is the Daily Telegraph, and the letter in question is endorsed by a coalition of religious groups like the Medical Ethics Alliance, which embraces human life in its "God given dignity," and the anti-abortion Choose Life campaign, which "exists to highlight an awareness of the sanctity of life from conception to natural death" (2).
Add to that the transatlantic rightwing hysteria around state provision of health care at the moment - particularly following Sarah Palin's delerious 'Death panel' lunacy - and you've got a Barclay Brother's rag wet dream, never mind that the news value is approaching absolute zero.
The Telegraph was always reactionary, rightwing and wrong, but at least it used to be more than the frickin' Daily Mail.
1 - "Sentenced to death on the NHS," by Kate Devlin, published in The Daily Telegraph, 2nd of September, 2009. (http://www.telegraph.co.uk/health/healthnews/6127514/Sentenced-to-death-on-the-NHS.html)
2 - The webiste for the Medical Ethics Alliance is here: http://www.medethics-alliance.org/ and the website for Choose Life campaign is here: . Both viewed on the 8th of September, 2009. Quotations are from the relevant websites.