> Yeah maybe that’s why women live longer in order to help with the exhausting process of raising their grandchildren.
Except that men become more important, especially for boys, but also as exemplars for girls, the older children get. Nurturing is more important earlier on, which is also the specialty of women. Men are generally terrible at it and generally hate it, while women tend to have a much greater affinity.
> We love to take care of babies, regardless of (or maybe because of) how clingy and dependent they are.
We must be careful with words like "love", because in our day and age, we have assumed a very reductive and immature understanding of it (as that which gives us pleasure or sensuous delight and "good feelings"). Love toward children is dominated by the hard work of charity. The aim is to guide a human being into adulthood for that other person's sake, for the sake of their true end, not for ourselves (hence the self-centeredness of thinking one is entitled to having children, resorting to all sorts of immoral technologies to have them). Disinterested charity, of course, has the effect of actualizing us as people, and nothing is as actualizing as parenthood, as that is our essential identity (one that can be exercised in surrogate ways, of course).
> babies might have evolved to be more and more dependent, because having more and more invested caregivers produces fitter offspring.
The major reason human beings require more investment is intelligence. Many species are born or hatched ready to go, and perhaps never meet their parents. Some require only a relatively short period of parental support. But human beings must go through a long period of formation. Intelligence is also the reason why we lack all sorts of anatomical features that other animals have. Why? Because intelligence allows us to pursue all sorts of ends, while other animals are quite limited in this regard. Thus, we lose the baggage and instead make technology, like clothing, that allows us to adapt to any environment. Fur or scales or whatever are far more limited.
> Parenthood is a self-inflicted sabotage and I cannot understand how come there are so many parents bearing children worldwide.
What a freakish statement. Sabotage of what, and how? If anything is being sabotaged, is it our nature to be parents by the culture of mindless, emtpy distractions of hedonistic and superficial consumerism. This antinatalism is an attack on the human person. It destroys the common good. Attack parenthood and you attack the raison d'etre almost all of the activity of humankind.