Working a job you don't like is a leaser evil than mooching off of your neighbors. The level of entitlement required to argue the opposite is absolutely mind boggling.
How many people have to work full time to support one able-bodied layabout?
UBI may make sense in the event of technology-induced mass unemployment, but folks won't tolerate it otherwise. The incentives are simply and universally too bass-ackwards for society to function. They're backwards for the idle (who will find it easier to cut costs than work), for new graduates (who can split living costs with friends and delay entry into the workforce indefinitely), for workers (who would rather rent a trailer and chill than work 40 hours a week and live in the 'burbs and drive a new truck), and for politicians (who will shamelessly promise endless increases in benefits).
IMO UBI is a litmus test for basement dwellers, unserious utopians and plain-old first-order thinkers.