They thought what they did were good for their kids, but it is actually very bad.
Why?
Have you ever thought why people had their destiny? Have you ever thought where they go after their journey in this world?
These kids do not really appreciate other people's help/love; these kids only care about themselves; these kid do not care other people's feeling; these kids do not even realized when they hurt other people. These kid would never grow up and become man/woman. They are always whiny little children.
Only at the end of their journey, they would regret deeply. But it is too late at that time. Nothing can be done and they have to face the concequences by themselves.