Being a bit closer to 18 I can tell you he may be depressed and all that but he needs a serious kick in the ass. It's not like this is a new situation. You've tried working with him and done all you can. I'm not sure if there's such a thing as a military college but that's where he belongs... in an extremely structured environment where they'll tear him down and build him back up as a new person with motivation and self respect. Failing that... I agree with what's been said above. Set a date by which he has to have found a job AND move out. Far too easy to skate by when he's under your roof. If he's not appreciative of what he has... time to go. He can go sponge off his father.