When others make fun of your infertility under the banner of being good for you, how to fight back?

If someone makes fun of you, you must learn to fight back. At this time, you should make fun of her. You can say that you are extremely happy. If I have a child like you now, and the child doesn't work hard, I will be more miserable. So you can say that when I choose not to have children, I might as well not have children, because you know how troublesome it is to have children, and you are so old. I think he will be very unhappy if you say so.