Misery does love company when its about addictions. Even if a person loves you their addiction may need your drinking or using more. Why would I want my drinking/using buddy to quit/abandon me? That kind of change is difficult to balance for someone who is still using. On the one hand, they want the best for you but their demon often calls the shots. Sometimes you have to make very difficult decisions to stay clean and sober. I don't envy your position!