Here's a really interesting and provocative article by Ezekiel Emmanuel, the brother of Rahm Emmanuel, the mayor of Chicago. Ezekiel is a retired oncologist and bioethicist, and this article appeared in The Atlantic last fall. He makes a compelling case, but I can think of plenty of arguments on the other side also. Check it out; I think everyone will find it interesting.
http://www.theatlantic.com/features/archive/2014/09/why-i-hope-to-die-at-75/379329/
http://www.theatlantic.com/features/archive/2014/09/why-i-hope-to-die-at-75/379329/