Is addiction a form of mental illness

Is addiction a form of mental illness? Addiction definitely is a form of mental illness, simply because it changes the way the mind behaves, you no longer can defend off various desires so your mind is incapable of making proper decisions, if a persons mind is incapable of making proper decisions it’s definitely been compromise, that would classify it as a mental illness. Addition is cosmic habit force, so therefore you develop a habit and the mind is trapped in a endless circle, the mine doesn’t want anymore of this substance because it’s very harmful to the body, on the other hand the mind craves the substance because it’s become a habit and it’s something that the body wants. So therefore your trapped in a conundrum, it’s definitely a position that you don’t want to put your body in but because life is full of so many obstacles and can at some times be incredibly boring, people like to indulge in different drugs to feel more alive.