Why are some ppl giving out dangerous advice on Q&A?

I'm very concerned when i read some of the answers posted here..especialy the ones giving advice to young kids..A thirteen year old girl being told its ok to have at that age is very irresponsible...its what she wanted to hear so she chose it as best answer ..the answer was posted by an adult..another example is about a boy who was meeting a complete stranger he met on myspace and going to their house..it could be a rapist ..but many encouraged him to go meet them...I applaud the ppl that are responsible and warn these kids of the dangers ..We don't need to be drama queens and think the worse all the time but it helps to remind kidsthat not everything is as it seems..******When you give advice remember that this young person could be your sister or brother or child or best friend.....For those of you that are responsible and caring i thank you ...Don't mean to be self-righteous..I'm just concerned..I have young kids myself (they don't post here ) I asked this question mainly to remind"some" ppl to be more responsible...