There is a positive relationship between having a child and fully accepting life. The person may like to feel that there is freedom to leave this life at any moment. Of course, I never advocate suicide, don't get me wrong, but just knowing that this freedom is in your pocket can give you the strength to hold on to life.
On the other hand, the person who has a child may feel that this escape ticket is burning because he has and will continue to take full responsibility for that child. Of course, this is a selfish and egocentric point of view at the same time. If we live, we should be able to take responsibility for living. with or without children!