A recurring question

At today's reunion among my mother's retired co-workers--many of whom I had not seen for years myself--I was asked the usual question, "Are you married already?" My negative answer was, as expected, followed by disappointment and an admonition--albeit a good-natured one--to get married soon. Of course, given that all but one of the people at the reunion are married people ,the general consensus at the gathering would be that marriage is the ideal vocation. At such situations, I'm really tempted to fire back with the question, what's is so wrong with being single?