When they grow up and have a family, the kids approach them with questions on concepts in academic subjects. If they are not in a position to guide them, sending them to tuition centres is the only option. And today it is a big expenditure to get our kids coached through these centres.
Getting great marks is one thing. It can many times be the result of a one sided peripheral study without depth, where the retention can be pretty ephemeral. But studying a subject properly is a totally different aspect. If the latter happens, then once the concept goes inside a person, it never evaporates.
I am not sure how long I will keep sustaining that magical impression in my daughter that I am the expert in all subjects. So far so good :))