One way we honor our father and mother is to care for them as they age. Numerous studies report that far fewer adult stepchildren think it their obligation to care for a stepparent like they would a biological parent. So aging couples can’t assume adult children will be there for the stepparent—and parents and kids need to talk through their expectations of one another. Now, adult children here is a thought. You may not think of your stepparent as family but one way to honor your biological parent is to care for their spouse.