My youngest son, age 27, has been clean and sober for two years, having survived the horrible addiction of fentanyl. I helped nurse him back to health. It wasn't easy, but he is alive today. However, with this sobriety, a new person is emerging who is critical of and condescending to his siblings and to me. He finds flaws in all of us that "disgust him," and therefore, he has chosen to no longer engage with us.