I don't think that people come to this site for a telling off, or "healthy criticism".
Most the time, I try to think what the person's reaction would be, upon reading the reply I wrote.
Sometimes I come as far as writing a lengthy and detailed response, then just before I press the "Post" button I realize that I am not "Mr Know It All", that every person who created an account in this site did so for a very special reason, that I don't know really what's on that person;s mind to make him/her write what he/she wrote, and also that it would be thoughtless, at the very least, to presume that whatever I write back will "open that person's eyes", and that what I think is in fact the reality of what they are going through.
But then again, what do I know...