Why? Because the major aspects of grace are integration, unity, synthesis, trinity/thirdness greater oneness and resolution of a problematic duality and loving action toward others and especially toward oneself, which of course is the ultimate loving unity.
All of these characteristics and experiences is why its so important to implement gracious policies into the economy and money system, especially at the point of retail sale because then everyone has the opportunity to experience and be influenced by these aspects. Its the ultimate mega-paradigm change.