On the other hand, many addicts have such people in their lives and still don't quit. I'm not at all ignoring that this could be a motivation. It may have been for my daughter.
Also, there are people who don't NEED a lot of people in their lives. I am one so I know this exists. I k now many loners and that does not mean they use drugs. In fact, due to lack of caring about peer pressure perhaps they are less apt to abuse??? Our difficult children often do not have meaningful friendships or connections outside of family (at least I know it is so in my son's case) because he is not only a loner, but, frankly, is not very likeable. My sister is a party animal who always had tons of friends and connections yet it seems she and her friends never stop drinking and many snort cocaine. They are in their 50's...lol. But I get what you are saying, Suzir, and I don't discount it at all. I just think addiction is complicated...a mixture of life, personality, circumstances, coping skills, family, friends and that gene that makes some more prone to addiction and some not prone to it.
I do not think an addict has to go to rehab to quit. I think they need to come the realization that something, anything, even life itself, is so important that he/she needs to quit. Almost any of us would support helping our loved one who was really quitting. But, yeah, Jabber is also right. We can not put ourselves at risk either.
My own philosophy is that it is probably better if, at a young age, you learn to care for yourself and enjoy your own company because there is no guarantee that any other person will always be there for you, except you. I try to talk to Julie and Jumper about this. That way, even if you find that your anchor person is no longer there, you can toddle along shakily at first, but make it in the end...because your best friend and support system is yourself.