Why are so many people here judgmental?

Whenever I ask a question on this site, I inevitably get some abuse as well as answers - as does my 16 year old daughter. Why are so many people on this site so judgmental about people they know nothing of?? Most questions only touch very, very briefly on whatever issue, & don't give a full account of what's happening. It could be a great site but the no-life brigade spoil it.