The answer for this thread is indeed the girl or daughter is better most of the time than the boy or son. A son may forget or may not look after his parents as a daughter does. While it does not mean that boys are all arrogant but it is obvious that they are no where in front of girls when it comes to emotions. And, they are better to deal with it.
There is no point in thinking that daughters are more affectionate towards their parents. I have seen many daughters who ditched their parents. Similarly, I have seen many daughters who served their parents better. I know many sons who never worried about their parents at the same time I have seen many sons who toiled for their parents. This all depends on the mentality of the individuals and how the parents deal their children. Generally, daughters speak very nicely with the parents but sons may not be speaking so sweet but when the question of taking care of them this is more the responsibility of the sons rather than the daughters and many of them will do that.
When people come at you with their worst, you should come at them with your best (advice given to Selena Gomez by her mother, quoted in Time magazine.)
World is continued because of male and female. So both son and daughter are needed to continue the species.
However is it because our excess debating and judging that the world now moves towards third and fourth genders and to asexual reproduction?
Then ultimately present human race may be replaced by robotic creatures.