Because WASM is currently solving a real problem for me that Java can't solve, ie easily embedding code I wrote in one language into many other languages. You c

Because WASM is currently solving a real problem for me that Java can't solve, ie easily embedding code I wrote in one language into many other languages. You can do something similar with shared libraries, but you have to compile them for every architecture and OS and solve the associated distribution problems. Ask Python and JS how that works out in practice. A WASM artifact runs everywhere, and has addition security benefits.