Any good therapist would not even counsel a couple where one is active in addiction. Only once that addict is in a program for the addiction can couples therapy even work.
You may not be wasting your time with him, but you will be wasting good money on the couples therapy for sure.
He may or may not be a waste of time, but like others said here, put your energy on you and he either follows or he continues into the mess.
It's tough to let go because we cannot and will not give up on our dreams, but just maybe this is not the dream your higher power wants for you.
Active addicts, while active, are a waste of time, yes