I would argue with your "massive benefit", unqualified. Because while it is true that basic research HAS improved life, much of modern research and technical production has decreased it: less sense of community, microplastics, climate change, destabilization of the working force (AI), less sense of purpose. What's the use of an even longer life if our entire way of life is just a production to add incremental levels of safety, which hardly helps most anyway?
While you might be right, it is VERY far from clear that the latest advanced research will really help us. It could also lead to our annihilation or at least dehumanization, which is really not much better than annihilation.
In fact, due to the immense damage technology has caused, the burden of proof should be on the technologists to reliably demonstrate that new technology is even worth it beyond propping up our broken, global capitalistic system.