I'd guess absolutely every person in a shit situation wants help. No one WANTS to be homeless, destitute, and addicted. The problem is, that for a lot of the worst off people in the world, that's pretty much all they have. Sometimes, the only source of any light in someone's life is a chemically induced high. Who am I to tell someone in that situation that they can't do one of the few things that makes life kind of ok?

This kind of thing is a failing of society, not the person, no matter how deep you drill. Each and every one of the people in this shit needs help, not judgement, not to get clean, not to make money. Start with providing actual help, a home, food, mental and physical healthcare. It doesn't have to be luxurious,just safe.The rest will follow naturally.