He already went to prison for what im assuming was a drug related offence. He got out and was clean when she married him. HE made the concience choice to start using again (if he is). I completely disagree with you. If hes using again she should leave him bc clearly he's chosen the drugs over her. Did you miss the part where she hasnt eaten in 3 days so he can buy drugs?! I have never used hard drugs so i really cant give a view from that perspective but i dont think drug addicts are "sick". At some point in their life they made the CHOICE to use drugs. No one forced him to smoke or snort or inject the meth. He chose to. Now hes choosing to let his wife starve so he can have drugs.
Without it harming me at all i REALLY wish there was some way to get myself addicted to something just so i could prove that i could quit and never touch it again. Imo its all just about willpower.