SB 4.13.43

prāyeṇābhyarcito devo
 ye ’prajā gṛha-medhinaḥ
kad-apatya-bhṛtaṁ duḥkhaṁ
 ye na vindanti durbharam
Synonyms: 
prāyeṇa — probably; abhyarcitaḥ — was worshiped; devaḥ — the Lord; ye — they who; aprajāḥ — without a son; gṛha-medhinaḥ — persons living at home; kad-apatya — by a bad son; bhṛtam — caused; duḥkham — unhappiness; ye — they who; na — not; vindanti — suffer; durbharam — unbearable.
Translation: 
The King thought to himself: Persons who have no son are certainly fortunate. They must have worshiped the Lord in their previous lives so that they would not have to suffer the unbearable unhappiness caused by a bad son.
Purport: 

It is said that a married couple must have a son, otherwise their family life is void. But a son born without good qualities is as good as a blind eye. A blind eye has no use for seeing, but it is simply unbearably painful. The King therefore thought himself very unfortunate to have such a bad son.