Justice Breyer asks Mr. Cooper a basic question: if procreation is the basis of “traditional marriage” and justifies discrimination on the basis of sexual orientation, why allow couples who cannot or will not procreate to marry? Justice Kagan then asks why we should not deny older couples who cannot procreate the right to marry. The exchange draws laughter from the crowd and reflects the irrationality and weakness of the anti-equality argument based on the ability to procreate.