When you're healthy (physical, mental, what have you), there's no dependents to worry about, no worries about personal safety at night, and a reasonable ability

When you're healthy (physical, mental, what have you), there's no dependents to worry about, no worries about personal safety at night, and a reasonable ability to walk into an average retail store and pick up a job ... that's one thing. Unfortunately a great deal of homeless folks don't fit into that very narrow criteria (much narrower than I expect most folks to realize), and so it's a metaphorical nightmare of a gun-in-the-head to take. Sometimes literally.