Bank bailouts, in theory, are to be paid back, with interest. In a lot of cases they were. Not all, of course, but the economy turned. Net, bank bailouts were a good investment. QE may turn out to be as well (I may doubt that, but truth it the jury's still out)
If that same deal can be made, believably, for basic income, we wouldn't be having this argument: we'd provide basic income, today, as a loan. Hell, I'd fight to add my own money to provide that basic income.
Since you pretty much don't like me anymore at this point, why not just go ahead and fully state the problem:
What we cannot have in the economy, is a large, and potentially exponentially growing, group of expenses without any useful work.
And when I mean "we cannot" I don't mean that I'm denying this to you. I don't mean states don't want it. I don't mean I don't want to give everyone that. I mean we cannot. Any such policy must fail in a limited amount of time.
I mean you cannot have basic income for any length of time in the same sense that you cannot paint the sky green. Disappointing perhaps, but simply a parameter of existence, nothing more.
You shouldn't blame economics for this. Nor should you blame states, banks, the rich, or anyone. The only things to be blamed for it is thermodynamics. Of course the universe couldn't exist stably without those laws, so maybe math itself should bear the guilt.