You've got to be kidding. As a regular middle class citizen my taxes are high enough already. There's no way I'll vote for UBI so that some slackers can sit around getting high and playing Xbox.
That slacker is already getting high and playing on Xbox. With UBI they will have less worries about staying alive and the opportunity to try things to get more money. UBI is a great insentive for people to try new things without there being a financial risk of you losing your income. Just check the trials and their results - people are more productive and happy in general.