Why This Stuff Costs $2700 Trillion Per Gram - Antimatter at CERN

so i have a question, just because math says something exists or is plausible doesnt mean it really exists or is only going to exist in concept alone. im not saying this isnt possible to bring into existence clearly a positron was pictured in this video, I do want to mention the extreme redundancy of creating something like this that isnt supposed to exist in nature at even the most extreme conditions, i once looked up isotopes of elements beyond what the periodic table of elements had listed to see uses or if there was possibilities of creating some in the future and as it turns out they are so unstable they would only exist for fractions of milliseconds. extremely impractical. 4th dimensional hypercubes, real but can only exist as a 3d model and its limitations of our 3d world. my question is why bring try bringing these things into existence for 2.7 quadrillion dollars for a gram of it or some other wildly expensive endeavor just to watch it fail? What can they hope to gain from this?