You're right in general, but the "because" is wrong. You could say that the causality goes the other way (you should take care of your parents because they took

You're right in general, but the "because" is wrong. You could say that the causality goes the other way (you should take care of your parents because they took care of you), but it would be more accurate to say that people just take care of family at every turn because that's what you do. As a data point, my family (and most others I know) doesn't consider its member's wealth really separate. My parents consider their wealth as ours (the children's) too, my sister and I would spend all our wealth taking care of our parents if they needed it, etc.