Okay, let's see if this helps any:
My genetic disorder costs on average $100,000 annually to keep me alive in a torturous fashion. My oldest son has the same condition. That's $200,000 annually that we "should" be spending on medical care. I am a former military wife. I am entitled to get that care through the military medical system -- which means at tax payer expense. Though, in reality, most people with my condition get a lot of that care covered by some kind of state aid and/or charitable program and the like (as well as often qualifying for disability in their 30s). Being sick all the damn time means you not only have high medical bills, you are also can't work.
We have gotten ourselves well and my productivity is rising. I no longer receive food stamps and I am now well enough to do freelance work to help support us.
Going someplace where the climate is good for my expensive medical condition is a financial win/win scenario, good not only for me but also for other people who would otherwise be getting stuck with the bill.
If you read much about homelessness, helping solve the problems of the homeless is typically cheaper than trying to "take care" of them while controlling their lives and so on.