Exactly. I have been without before, and it consumes too much of your higher brain function. Lots of problems evaporate even with a small amount of cash or cash flow. Conversely it is hard to then use money as an efficient lever after running on fumes for years. This is often why you see changes in leadership as an org grows, the person who bootstraps a company has a much different skillset then the person who grows it into a large powerful org. The latter should know where to spend much larger sums of money to achieve goals rather than penny pinching and sinking more precious resources like time or focus.

I think that when most people think of basic income, they don't think of the type of society you mentioned. That's something we hopefully will get to in the future, but we're still quite far from it. If we get basic income, then it's probably going to be much sooner than that, which is going to have widespread implications on society. Many of which we don't know.

I even think that most people would have no problem with a basic income type system when most basic goods are incredibly cheap to produce. After all, if it costs a penny out of your paycheck, then would you really mind if that covered the basic needs of everyone? The main issue I could see related to that would be if this somehow encourages population growth.

This is otherwise known as the fixed pie myth. No, wealth is not a zero-sum game.