why do you think sharing houses with many others creates crime or that the people would be criminals and addicts?
It is a fact that criminals and addicts will flock towards the cheapest housing options and bring their problems with them. That's just the nature of being the cheapest option.
The idea that if we just remove tools from poor people that they go away is patently insane. We want to... kick people while they're already down... and we expect that to help anyone?