This gets at a problem I always wonder about with UBI (as someone who genuinely sees the value in a successful implementation of it). What happens in 20-30 years once the system has been entrenched. Will the children of those that choose not to work for additional income have decreased social capital an struggle to enter the workplace if they choose? How do you prevent those that choose to work from using the increased wealth to exert force on those who didn't? These are the actually problems I see around UBI, not how to balance the budget.