The Avengers doesn't solve this problem of what to confront for us. Art rarely gives us definitive answers; it more often asks questions than answers them. But by bringing this current to the service, it could at least remind us of the possibilities open to us.
"Addiction" is always about the underlying pain. The solution? Legalize and regulate all drugs. Integrate drug policy into public health. Treat addicts as humans, their physical and psychological issues as medical conditions.