The biggest reason I support UBI(Universal Basic Income) has nothing to do with our possible automated future, as labor becomes less essential, or at least as we need much less of it, though that's a great reason to support it. It's not even about eliminating poverty or making the unemployment rate a non-issue, though those are very good reasons too.
The reason I want a UBI is to make work at least -technically- optional. I want this because so long as work is not optional, so long as it is mandatory, it is coercive. I want UBI so that every low wage worker whose boss screws them on hours, who reprimands them for taking sick days, who asks them to work too fast in unsafe conditions(see the current fast-food lawsuit), every young employee whose boss secretly grabs their ass while no one is looking, who's constantly making lewd comments, or racist comments, or any other sort of hateful bullshit... So that every employee who finds themselves trapped in the fiefdom of some petty little tyrant of a boss, which is actually The Majority Of Low End Workers, so that they can say:
"TAKE THIS JOB AND SHOVE IT"
So that they can really, truly, meaningfully walk the fuck away. And not have it mean they end up on the streets or their kids starve or they find themselves turning tricks to keep the water running and the lights on. Or for that matter just ending up in yet another job with a slightly different petty tyrant. And they can do this, deal with this, without having to deal with lawyers or Union Reps, who though are better than -not- having them it'd be nicer to just be able to do it ourselves. Because if -enough- of them(us) say 'NO' to this petty fucking bullshit, then firms will be forced to stop letting the petty bullshit happen(those who fail to will simply not get workers), and work in general will end up less awful for everyone.
Because the ability to say 'NO' to someone who's actively abusing you... that should be pretty high on the list of 'Liberties' worth defending. In my mind.