Sadly these kids don't look at us and think we did so much for them usually. We want and expect it. We would notice it. Most of ours consider their problems because of us for various thought problems,,,such as anger that they are unhappy and not thriving. We raised them. Dad did not. These kids, or adults, don't really want rules. That's why so many are homeless by choice. They drop out of life and it's petty rules, such as getting a job. Son may leave Dad too and go back and forth until /unless he decides to join society. A great deal if our homeless are mentally ill or substance abusers who see no need to get help. They just don't want to play by society's rules and often say "Nothing is wrong with me. It's you." My daughter did this.
Now not all become homeless. .Some find other ways to live without rules. Many decide to finally get help. It's very individual but not your fault. And focus on you now since all of us have zilch control over the lives of anyone other than us. We can't force our kids to see us the loving way we truly are. Or see others the way they are. Or see that help is a good thing. They eventually might. Or not. Don't write your son's ending. Only he can write his story.
I hope you have other loved ones, friends, church....focus on you first and then engage with positive people maybe. We love our kids but they don't make us happy. Or unhappy. We do that to ourselves. We have to learn how to change our thinking...lots of research done on happiness. Look it up. You will learn but you have to try. Maybe don't stalk social media to see how Son is. FB is a show for others, often to make people look good, bad, or to even target us and our fears. No FN JMO
Let go and fly.
Love and prayers.