addiction is partly a human trait, it has roots in obsessive behavior which i think all humans have towards one thing or another to some extent

Addiction to anything should not be viewed as a "crime" its simply a human weakness that needs to addressed by rehabilitation and education, not imprisonment.

People may do many things due to their addictions, which those things could constitute to a crime like robberies, sexual crimes, murders, fights, etc

and these crimes do have victims, its not like they are ok.