Would people become couch potatoes? Would anyone go out to work if they had a basic income?
First of all these people exist in the current system and will always exist. The basic income can't solve all the world's problems. However, the basic income does entail a positive view of human nature. We believe and surveys show that the vast majority of people would continue to work because they enjoy it, because life would be dull without it and because it enables social interaction. Furthermore the basic income would enable people to chose work which they enjoy, and people who like their work are also more motivated and productive.