Yeah, but the choice is generally between the addicts or the mentally unstable with most homeless people. Its not exactly a win win. You can at least reason with a drunk and they are cognitively 'there' enough to know how and who to get resources from. Meanwhile Jimmy is using spoons to contact his ancestors on Grimlock 4 in the Bylock system. 

(Your right in that its not a /healthy/ or in fact /good/ choice. Its the lesser of two evils as it stands)