Because grace is loving, that is, the active expression of love which is the universally recognized superlative human concept and experience and such action creates and re-inforces more graciousness/loving.

And the one most efficacious way to create the most grace is to find a way to evoke it in a universally necessary and participated in system…like the economy for instance with reciprocal price and monetary policy of gifting with a 50% Discount/Rebate at retail sale. Talk about a mega-paradigm change.