The government can't sustain anything. The people do. The funds come from the people. So instead of the government robbing the people to pay god knows what, we the people would fund it like we do everything else.

When we think about how much money the US spends on Social Security, Medicare, Medicaid, food stamps, Supplemental Security Income, housing subsidies, welfare for single women and every other kind of welfare and social-services program, as well as agricultural subsidies and corporate welfare. As of 2014, the annual cost of a UBI would have been about $200 billion cheaper than the current system. By 2020, it would be nearly a trillion dollars cheaper.