RE: Our parents, at old age, become our babies for nurture and care

You're right, it's the responsibility of the parents to nurture their children. That's why it's important to be prepared before being a parent because it comes with a lot of responsibilities. And I'm gonna hold to one point here

don't expect your children to care for you just because you cared for your parents

A blunt truth, but a child raised with love will care for their parents during old age, without being forced.