Huh, funny enough - Go was my first try to replace PHP, but as I don't share opinion "copy-paste is better than generics" and "executable comments are ok", I tried Rust, and now I have REST API with 10000+ LOC - it serves multiple web apps and works just awesome and I really feel fun of programming and I'm enjoying language. So "I don't know why you'd want to write a web app in Rust" sounds ridiculous for me. Really, "I don't know why you'd want to write a web app in Go".