You presumably aren't the target audience.

There are a lot of people who are working hard to stay clean and keep their addictions at bay because the costs of being addicted are too high: They lose their job, their housing, their ability to support themselves, and their future.

If you offered these people a way to do drugs for free, and a place to stay for free while they did those drugs, the incentives change dramatically.

Drug addicts are also very good at lying to themselves. You'd get people telling themselves they'd only go in "for a couple days" or "for a month or two" who would end up in there for years and years.