SilverViper
Premium
It would let private charity take care of it. See it's fundamentally wrong to force people to part with their hard earned money to fund useless eaters.
With private charity people can personally assess the situation and willfully donate. For example a less well off family couldn't afford insurance and their house burns down. Their friends, family, community, place of worship, etc. could then pitch in to rebuild their lives. Also in this day and age we have go fund me. But at the end of the day everybody who donates did so because they wanted to.
Instead what we have now is the government who steals from every last productive person and then redistributes it many times to people who don't deserve it but what do they care, they're not really checking if the payout is merited.
And so to conclude, in libertarian state where the person couldn't justify to people why they are deserving of charity, they would simply starve to death.
For immigration, it would not be sustainable in practice though.