No man should bring children into the world who is unwilling to persevere to the end in their nurture and education.
Crito is attempting to convince Socrates that since Socrates has chosen death he is leaving behind his family, his children, and that he will be betraying that which he has sworn himself to in life. Socrates postulates that he has done enough to amend a proper relationship with his family and that they will be fine after his passing.