There's a, let's call it a phenomenon, a mentality, among unrepentant addicts who have no intention of quitting and their life is actively disintegrating around them: the people pleading with them to stop, slow down, walk away, think of their kids? Those people become the enemy, and every harm you inflict on them is justified. The people egging you on, the enablers, the ones feeding your addiction for their own gain? Those are you closest friends, thick as thieves, unbreakable bonds (in their head).
He will lose everything, including his life. But not before he ruins absolutely everything he can get his hands on.