According to me it is true that 'The nuclear family system has led to the degeneration of our values' because in nuclear family the child has the less chances of learning moral values than a joint family. In joint family he can get knowledge from many members of the family but in nuclear family he lacks this opportunity. so nuclear family system is not advantageous for children.
It is the thinking of the people that they will be happy in nuclear family because they will have less responsibility but in nuclear family system they will have no other older members to help and support them. So the parents will be tense and with feeling of unrest every time and everywhere and in this situation how they can teach their children good things.