But it's more than a little maddening to have to stop myself every time I consider answering a new member's question, and wonder whether my advice is going to be dismissed out-of-hand even if I have firsthand experience with the situation and the person dismissing does not.
You should give your advise freely. As everyone else does without reguard whether or not it is taken & applied. It's the combo of all advise/experience shared that is the value of this forum.
If you get mad when the girl you give flowers to rejects them, you'll stand not a chance. Give it your best shot & let it go.