Nothing is affordable when you are addicted to opiates, and have to spend every cent to get them.
No one who has been to SF within the last few years would contest that the majority of the homeless there are drug addicts, due to the effective legalization of buying and selling drugs its right in front of your eyes (and under your feet in the form of needles)
The replies from several homeless and articulate folks on this thread, who are both working and homeless appear to contradict your assertion. Once you are homeless for some time, I assume you will automatically fall to drug-addiction as a means to mentally escape your situation. Especially when the way out looks so hopeless and difficult.
No one who has been to SF within the last few years would contest that the majority of the homeless there are drug addicts, due to the effective legalization of buying and selling drugs its right in front of your eyes (and under your feet in the form of needles)