"I'm happy because I paid for it" 

Carlos and Marita have given their children everything they need, not necessarily everything they ask for. With fatherly and motherly pedagogy, they've shown their children how to be the protagaonists of their own happiness, teaching them to cover their own expenses, to know how to save, to not be carried away by the latest trends, etc. Living counter culturally has produced its fruits: their children take care of the things they use, and are grateful for their brothers and sisters.