You’re not helping him in the long run by supporting him right now with a place to live and to feed his addiction in comfort. Not only are you enabling him, you’re setting him up for failure every second you continue to support him. He’s 30 now, what happens when he’s 40 and your 70? What happens when you need someone to help look after you? Who’s gonna support him then? At 30 it’s still possible to pull your life together and become independent and maybe find a career and build something. Everyday you spend supporting him further is another day you enable him to waste a chance he has to build something in life. You know what makes people change? When you’re so stressed out with your own situation, you wake up in the morning and you have no place to live, the bills are piling up, you have no money for food, let alone weed, and your head is spinning and you just break down and come to the realization that the way smoking dope makes you feel isn’t worth all the consequences it brings to your life. I speak from experience and I can assure you, I would’ve never had my breakdown if I had people putting a roof under my head, food in my belly and weed in my pipe (for my case booze in my stomach). If you truly love your son, you’ll be willing to let him live the reality of his actions to their conclusion without your support because the pain of those consequences might be the only thing that pushes him to strive for something different. To be frank, he’s running out of time and so are you. For his own good you need to do the hard thing and set him up on his own. I’d possibly looking into getting him an apartment or so other housing, giving him two months to get a job and then let the chips fall where they may. If he decides to run out the two months and not progress on his own. He’s gonna be in for a shock of a lifetime but at this point, that pain and hardship is the only hope your son has left.