Have you ever spoken to someone regarding an incident or something you experienced for feedback or insight? Seeking good advice or input on the situation and In return instead of giving you their good insight regarding what you have said they change the subject entirely or their advice stems from some past relationship that they seem to still have issues with.
And how do you know the people online are giving you sound advice ? How do you know they're reliable ? Only if you know the answer of your request beforehand, you can know you can rely in someone you don't even know where he/she comes from, or what he/she really is!