If you were in their situation, you'd do exactly as they would, you just had a better situation in your life. We owe it to them to give them that shot.
I know it's easier to blame these people for their choices, but in a lot of cases, there never really was any other choice for them. "Just don't do crime" isn't really a choice you can make when nobody explains to you what else there is to do that gives you any real shot in this world.
I'll repeat, because it's important: you'd do exactly the same thing these people have done, if you had their set of experiences.