Arguments for or against BI don't really mean much until you actually test the theory out. There have already been BI experiments and one of them was in a town in Manitoba Canada back in the 70's. See: https://en.wikipedia.org/wiki/Mincome. The experiment was to observe the effects on productivity and the labour force or rather: if people would just sit around on their assess if they knew that they would be taken care of. It turned out, that in the 5 years it ran there was a slight drop in work hours but mostly by new mothers wishing to spend time with their babies and teenagers focussing on their education. Also, there were fewer hospital visits and fewer consultations with mental health professionals.

The experiment only ran for 5 years so it doesn't really give us much information on the long term effects. But I think it does show us that there was no drastic collapse of our social and moral fabric, instead it was strengthened. People didn't morph into the welfare bums overnight that some would argue is the "obvious" consequence of BI.

...ummm citation needed. There was actually a BI experiment run in Canada in the 70's. It showed that while there was a drop in the labour force it mostly consisted of mothers who were staying home to look after children and teenagers who were focusing on their education.
BTW. this whole "welfare bum" argument is so fucking tired. As if welfare is this golden ticket to drinking and smoking all day, watching TV and making babies. The funny thing is, that while people with mindset may exist (though certainly a minority) I sure as shit wouldn't want them working for me! They're better off where they are, spending what little welfare money they get in the local community.