I came to know that the parents expects their child to pay the rent when they are of age in the west much later in my life. In Asia, its unheard of.
In most countries that I've known in Asia, the child stays rent free however old they get. It's like even when your parents gets retired and you are earning, you are not obliged to pay the rent to your parents. And if anyone asks their children to pay the rent, it does mean they are disowning them and not considering them their own. It would lead to them getting a different place to stay. If they need to pay rent, they'd never stay on their own home.

Raising a child is double edged sword, you should not control over everything and let them be independent and do their own things but you should also make sure they don't feel insecure or unwanted. A home should be the place a child could always return to when they are going through trouble or failure.