The first priority should be cleaning up the cities for the benefit of the actual taxpayers. Absolutely do not let drug addicts overwhelm your downtown cores and make them terrible. You don't need to lock them up indefinitely, but you do need to move them somewhere else where they won't have hugely negative effects on the city and its populace. It may not make life for the addicts better, but it won't make life for them much worse either, while it will make life for everyone else substantially better -- and we should be prioritizing the welfare of the productive members of society who actually pay to make all of it possible. Right now way too many cities have lost the plot by being too permissive of violations of the social contract, and everyone suffers as a result.