You still did the right thing. Some folks may squander a chance when it is given, but giving it in the first place is never a mistake. Something tells me you already know that though. I hope for you that the thefts and such were a short lived thing (recent). If he is in the grip of some serious drug monkey, he may still need help. Unfortunately though, ya gotta actually want the help. I'm hoping the cavalier attitude and lack of grattitude stems from the dope.

Anyway, I know it isn't much solace but the very fact that you did someone a solid is ALWAYS the right thing. You can't always dictate the outcome however. My hat's off to you and your family...sounds like good people to me.
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...got YAK???