UBI's don't address the right problem, it's not people not having enough money. The problem is deeper than that. Human beings are beasts of burden, if people aren't provided a place where they can accept social responsibility they degenerate, especially conscientious types.
The core problem is money creation, and the fact that each is not enfranchised in the process. Money is loaned into existence, and interest paid to maintain the value. That interest is not directly distributed to each, even though each is compelled to accept the money in trade for goods and services. This largest stream of money, the interest paid on global sovereign debt, represents the financial security provided by states, and should be equally shared with each
A UBI would hurt those individuals who are suffering from depression and mental illness by giving them the easy out to leave the workforce which is usually a help to their coping skills, self esteem and social well being.
There is an entire Ted Talk and associated reading list disproving this exact claim. A lack of cash is actually specifically a cause of stress that forces poor decision making, and international studies suggest that a UBI will create a happier, more satisfied population.