yes! I was born in a family where in we always take care of out aging grandfather of grandmother, mother or father.
There was one time where in we talked about this with my parents, they are both working and wont be a problem in the near future but we are already making an arrangement.
there are 7 children in the family, I am the youngest and we talked about it before, who ever is near them and available she or he will be the one to live with them, then we divide the expenses, we open a bank account where in we are required to deposit money in case our parents needs them in the future. They have health care and they will have pension but we know that as days go by those pension wont mean anything, so we are preparing for it now. Those who are not married and with no kids are required to deposit double the said amount those who are married will pay half.