It’s an oxymoron, isn’t it? Adult Children.
Adult children are people who are in your life that you’ve nurtured and cared for since before they were born.
When they were teens, you expected the rebellion and the non-belief of things you’d tell them.
As “adult children”, you are not prepared for the skepticism and lack of respect for your view on anything in the world.
You can only hope that by the tmie they appreciate your wisdom and advice, that you are still around to give it.