Everyone I've ever seen argue this has had strong opinions about how other (more greedy and venal) people would act. They, of course, would still work, but the great unwashed masses would sit on their backsides and take the money.
I suggest, instead, we try specifics. Given a basic income, I wouldn't be lazy. Nor would anyone I know, which includes some very poor people who would love to work if they could only do better than on benefits.
I suspect (though I don't know), that you wouldn't be lazy, either.
Also, the evidence of limited trials is that this increases work, not idle people:
eg http://www.bignam.org/BIG_pilot.html
> The BIG is a form of social protection, which reduces poverty and supports pro-poor economic growth.