Talk to my daughter (8 years old):
Uncle, why are you helping us? Are you going to live with us?
I live with you, and I help because I live, and I live because I help. A closed circle, you know?
Hm... it doesn’t happen! You live – because you help, and you help – because you live, and you live, because you were born, and you were born... No one knows why you were born...