No one is responsible for providing the resources a person needs to live except for that very person. The government is not responsible at all if someone is just too stupid to stop wasting time and get a decent job. Such individuals would die out in every other species due to natural selection.
If the government gives out money to poor people, They may become reliable to the government, Which ultimately means that they not try to find work just so they can get money without working. This is inherently unfair because some people work hard to have the money they have, So why should poor people get an unlimited flow of income even if they didn't work. This system would give money to lazy people that don't want to ever work and may encourage some individuals to quit working just so they can be eligible for the free money.