The breaking of the glass at the conclusion of the wedding also symbolizes that marriage is not always as joyous as the wedding itself. The bad times, when our hearts break, are representative of the shattered glass.
A couple that enters marriage, believing that their married life will always be as blissful as courtship, is in denial and doomed to failure. In this sense, the breaking of the glass causes us to be mindful of the needless barriers that people erect between one another and that we can break down the barriers and build a relationship of respect, unity and peace.
The breaking of the glass also symbolizes the fragility of life, the fact that whatever we see before us as a whole can be broken at any moment. It calls our attention for the need to care for one another; for just as the glass can be shattered with a single blow, so the grace of a marriage bond can be shattered with a single act of infidelity or repeated acts of emotional
The idea is that the couple’s lives together be longer than it would take to fit the pieces of the broken glass back together again.
In Greece, the custom of breaking plates during the reception symbolizes good luck, happiness and the permanence of marriage.
The breaking of the glass also serves as a separation between the awe of the ceremony and the reception celebration that will follow.