During the wedding, the couple may be so carried away with unbridled joy, that they are unrealistic about the nature of marriage. The breaking of the glass reminds them that less joyous times are part of every marriage. Even the happiest of wedded lives include days of breakage, just as the happpiness of the wedding is momentarily shattered with the smashing of the glass. We express the hope that, even after difficult hours, we will have the opportunity to rejoice with the couple once again. The average days of marriage may not be easy.
Work is involved in making decisions together, facing difficulty, and resisting temptation.
We must engage in the effort of fulfilling a positive commandment. The result, though, is an inestimable blessing. May God grant us the strength to perform this mitzvah with determination and with joy.