It’s assur for a Dayan to only hear one side of a story
This is the key reason that you are wrong. Indeed, a judge needs to be absolutely objective and fair. We, however, are not acting in the capacity of judges.
Someone giving advice, on the other hand, does not need to be absolutely objective or fair.
Or is it your contention that anytime anyone asks me for advice, I should say “sorry, I haven’t heard the other side so I can’t help you?”
The Wolf