I don't think there's any direct near-term benefit that will come out of it, especially of the engineering variety. Our civilization doesn't even make use of t

I don't think there's any direct near-term benefit that will come out of it, especially of the engineering variety. Our civilization doesn't even make use of the subnuclear physics described by quantum chromodynamics, which is now nearly 40+ years old. It's likely to be a long time before we 'need' correct physical models on shorter distance scales. That said, we're not devoting the kind of resources to string theory that we devote to engineering ready problems. Probably somewhere in the ballpark of $10M/year worldwide funding provided by various governments, with a similar amount provided by private donors. This is rounding error. In the US, we spend about 10x this on the National Endowment for the Arts. You can make an argument that all money spent on extensions of the Standard Model (and there are a lot of them besides string theory) has been wasted. But string theory at least has taught us far more about the structure of the mathematical models we use to describe physics than any of its competitors. This is why people continue to study it, even in the absence of experimental confirmation.