@Stephie - I have read the other post; I don't think your response is necessary, nor do I think it's useful. The policies in place - Be Nice (referred to), and what to do when one disagrees with the premise of the question - are useful and beneficial to the site. Remember you can always pass over a question that bothers you.
@anongoodnurse basically for me it boils down to OP questioning the premise of the mother - co-sleeping is a topic that has a lot of cultural aspects. And I truly believe that it is nobody's business except the people directly concerned, not that of a relative, friend or other person. The question doesn't "bother" me or I would have passed it up.
@Stephie There are lots of opinions out there. No one agrees with all of them. But we have policies here about being respectful. As you are very considerate of others, this is a bit surprising. I think you should just ignore this user.