There is something about being a teenager when your brain, body and personality are undergoing massive changes. I can remember people I went to high school with like it was yesterday, people in college not so much. I think there is a reason the high school reunion is held in such high regard.
What you remember from when you were 17 is a dream, not reality. You've romanticized it in your mind for fifteen years, whenever you faced a tough hurdle, you thought "if only". My guess is the reality will not match up to the dream. The likely outcome is you will end up disillusioned and lonely with your family's opinion of you destroyed and the happiness you dream of an illusion. You have the dream now, a man who seems to love you, three "amazing" children. Do you really think the grass is greener on the other side?