Han Solo - The Mistakes of the Father
Ben Solo’s parents couldn't hide away from their extremely busy lives for long. Because she was an important politician, Leia didn't sit idly at home and often had to travel far and long. Finding himself the husband of someone so prestigious, Han fell into a sort of first-husband role, turning from his life of crime to a successful career as a sport race driver. He sponsored important races, raced for charity, and more.
Despite his best efforts, Han started to drift further and further from his son. Ben Solo was often left alone at home.
Making matters worse, the Solo’s worked hard to protect young Ben from the knowledge of his lineage. They worried how knowing the true identity of his grandfather would affect him. Once he did learn the truth, Ben’s trust in his parents was broken. The events that followed while training under Luke completely separated him from his family and sent him hurtling into the dark side.
Han was so dismayed by Ben’s downfall that he left Leia to return to the smuggler's life of crime. After many years on the straight and narrow, there’s no doubt that he did this as a form of punishment inflicted on himself. Perhaps he felt that he never truly deserved his loving family in the first place. He became just like his own father, a runaway. Han traveled the stars with his pain.