“You don’t pay back your parents.
The debt you owe them gets collected by your children, who hand it down in turn.
It’s a sort of entailment.
or if you don’t have children of the body, it’s left as a debt to your common humanity.
or to your God, if you possess or are possessed by one.
The family economy evades calculation in the gross planetary product.
It’s the only deal I know :
When you give more than you get, you aren’t bankrupted,
but rather, vastly enriched.”
~ Lois McMaster Bujold, A Civil Campaign
You can’t count things your parent has given to you as something economical. More than all things you need in a form of stuff, parent has given you all the love that make you become human. There are so many things can not buy in this world and I’m confident to say that your parent’s love is one of this.
When children grow up and start to earn money, they often think to pay back their parent and everything will set in balance. It doesn’t work that way actually. You can give part of yours to your parent to make them feeling proud. Perhaps it’s not formality and really helpful for them. They may have surpassed their productive age so any help you give will make them so much better.
Though, it doesn’t necessarily your duty to be their kids done. Responsibility isn’t always associate with money. If your parent are still alive, try your best to make them happy and proud of you. I promise that moment wouldn’t be so long one day you know they are passed away. The moment of affection will keep their memories with you. It will make you have no regret if something happen to them. Remember, once you grow up, at the same time they grow older. Never waste your chance on this.