Not all of us view death as the worst thing that has affected this species, not sure why we should all “fight” against this. Afaik there’s no way for this planet to hold and accordingly feed hundreds of billions of people (us, our kids, our-grand-grand-grand.....-kids, none of us dying), so what will happen in case we were given the “eternal life” curse is that we will stop having kids. I for myself would always choose the world belonging to kids/younger people instead of older people.