The Hadith states that a child's paradise lies under the feet of its mother.That is why every child must be respectful to his/her parents.However, to receive caring behavior from their children, parents must also fulfill specific rights towards their children as described in the Quran and Hadith.Otherwise, children will become oppressors instead of caring for their parents.
Note: No matter what kind of parents they are, it is essential for every child to take care of them.