The bigger question is why do you get a free govt provided house for being utterly wreckless with your body and getting addicted to opiates. And the assumption is that the hardworking taxpayer has to buy his house and help pay for some junkies house?
Sure, provide safe and very cost effective housing. Maybe something like the old time barracks. Double bunks and a locker for clothes
Again, it's not a "reward" to get these things. It's a shitty and dark chapter in anyone's life to end up in state subsidized housing, rehab, work programs, counseling, surrounded by others going through the same thing, not making any money, etc, etc. However that is exactly what recovery and correction looks like, and it keeps people off the streets, reduces theft, reduces relapses, improves outcomes. Yes it costs money but I guarantee you that no one who goes through it would wish it on anyone else even though there are material upsides to it.
An analogy here would be AA. Not sure if anyone here has been to meetings, but I have, and I guarantee none of those people would wish their journey on others, even if they got a few "freebies" from the good will of strangers along the way.
As far as "getting addicted to opiates" again this is not really a choice for some. For one there is a well documented history of extremely predatory prescription of opiates by "doctors" which has been found to be malpractice and even national conspiracy. Google Purdue Pharma to learn more.
And sometimes a person's particular chemistry is such that they can very easily become addicted to opiates, alcohol, etc. All it takes is one unknowing dose and someone's whole life can be taken over. I think people who have not experienced severe addiction do not understand this, but some people become irrationally addicted to things. Yes they know it's bad for them and destroying their life but they still go back for more. Look at people who are morbidly obese, people who get ghastly excessive plastic surgery, people who gamble away their whole family's life savings, same thing.
Just be glad your addiction is coffee or endorphins from exercise or adrenaline from hunting, and not something more destructive.
And a last comment on the burden on the taxpayer. Again, this should be one of the least outraging things your taxes are being spent on. And the burden of payment should really be put on the institutional investors and big companies that are driving insane price escalation in our housing market and metro areas and creating this crisis to begin with. If you want to be harsh and punitive throw THEM in the gulags and you will really solve the problem.