If people bartered instead of using currency as the value equalizer, what would be the economic repercussions?

i am working on a theory that the monetization of trade counteracts the natural subjectivity of human interaction, which allows for true win-win trading. for example, if my trade network values salt above silver, and vice versa for you, then we can both leave a trade as heroes--but if there is a (fluctuating) price point set by a third party, then one of us is inclined to feel 'used' as opposed to 'heroic' for making the same trade