Eh, I think you exaggerate.
Sure, some people are so disabled they can't travel. For those who are not disabled but are simply poor, here's what they need-- and it doesn't cost much.
- A greyhound bus ticket
- Camping gear: A tent, sleeping bag, inflatable camping mattress
- Clothes
I used to live in a tent. Sure, it's uncomfortable, but it is fully survivable.
While living in a tent in some woods, I pulled myself up by my bootstraps, applied for jobs, visited community centers for showers & food handouts.
Applying for jobs-- How long did it take?
- Blue collar jobs: Took a day to get hired, $13/hr job.
- White collar jobs: Took 3 weeks to get hired $25/hr job.
I've lived in a tent while studying and job hunting 3 times. Now I am quite gainfully employed making over $50/hr.
Should tax payers pony up? Not if you mean people other than the individuals who need to pull themselves up.