I have a family who is addicted to drugs but I think they have the same principle because, in my observations, they are willing to sacrifice anybody just to fill their needs because they don't really care about anyone anymore as long as they get the means to do their addictions. Just like the story I always relate concerning this topic, when our neighbor befriended a gambling addict, they won't give him peace because whenever he loses all the money from playing cards, he goes to ask for money from them even in the middle of the night where everyone is sleeping and this is a real story because I witnessed it myself. this is how mad they are and they cannot just simply stop whenever they want.
Addiction to drugs is the same like any other addiction. The habit tends to control the behavior and thoughts of the individual involved. And like any addiction, it would tend to control the activities of your life and this would I turn affect your life and the people in it.
No one has much patience for an addict aside from family and close friends and everyone tends to leave the addict sooner or later.
I don’t think addicts don’t care and is willing to sacrifice anyone just to feed their addict. They simply prioritize themselves and the need to feed their habit over anything else, including family. At Regis point, stopping is easier said than done as it’s no easy task for an addict to just quit.