The Economist has a section called "Open Future" where they invite and curate debate on big issues.
One of the interesting "conversations" going on now, is a series of op-ed pieces taking stances and making cases for/against "Assisted Dying", in all its forms.
(Note: I say "conversations", but there is no position/response debate. It is simply a series of op ed articles from one side or the other. The result is that each article stands as the authors own, complete thoughts. And there's no idiotic commenters.)
Each article makes a case for or against the subject, from the author's perspective.
The people who The Economist have invited to take part in the discussion are an interesting range of professions and perspectives. It is enlightening to hear reasonable and passionate opinions that run counter to my own.
Check out this specific conversation, or go up one level on their site to see other conversations on a wide range of other topics.