The Universal Basic Income is one of the most ridiculous ideas I have heard recently.
Why would one get a job to further themselves?
You have described the main problem.
Of course, many liberals for this thing believe 99% of people will forego slacking off and eagerly pursue careers that will involve a lot of pain and effort.
The thing is, we can already provide employment for virtually all not mentally challenged, able-bodied people.
But milions still slack off and either become parasites living off the earnings of others or criminals.
Creating a UBI that ensures any person who doesn't work can still subsist even with minimal basic comforts, will create many more millions of slackers who will be quite willing to sit on their kiesters while other people slave away at some job. Two or three slackers can join forces and live quite comfortably on $36,000 annually or whatever income they'd get from the fed. gov.
Once again liberals flunk the human nature quiz.