Universal basic income has so many positive impacts that the cost of having it is less than the cost of not having it. See my pinned thread to learn about all the positive impacts and the lack of impacts that many fear.
Sure, unconditional basic income will reduce poverty, reduce mass insecurity, reduce extreme inequality, reduce crime, reduce recidivism, reduce homelessness, reduce illness, reduce depression, reduce child abuse, reduce partner abuse, reduce obesity, reduce drug abuse, reduce debts, increase savings, increase trust society-wide, increase entrepreneurship (including worker-self-owned enterprises), improve birth weights, improve educational outcomes, improve nutrition, and put pressure on employers to raise wages for jobs people don't like doing by improving the bargaining power of all workers, but what's the point if it's not socialism?
Now excuse me, I have champagne to drink.