Parents are like the God we have on earth, they are the only ones that have the unconditional love, no parents can ever mislead his children they always want us to prosper so the best way we can return this favour to them is to take care of them during their old age, during their old age when they don't have enough strength to work for their self or take care of their self it's our duties as their children to take care of them, apart from being our duty to take care of them there is also blessings that comes from taking care of our parents. It's their right to be taken care of because they deserve it