Why are the old men and women at the "matchmaking corner" becoming more and more frantic?

Let me tell you a secret: they’re not looking for partners for their children, they’re seeking security for their own old age.
Do you think they’re doing it for the children’s sake? Wrong.
What they’re truly anxious about is — if their children don’t get married, there will be no one to take care of them in old age.
No grandchildren, and when they grow old, they won’t even have someone to visit them in the hospital.