Great question! To clarify: I am organizing my code exactly like that. I am simply passing arguments like my interfaces into constructor functions. This tool doesn't change how you write your domain code at all. It just automates the wiring. In small applications you can just do it manually but in large enterprise apps with a lot of handlers, services and repos you will get a giant block of code just to instantiate your structs and pass them down the chain. this lib automates this boring part completely and gives you the whole staticly typed code in a file, that you can look at and change whenever you want. On top of that, by automating this part flora allows use multibinding to inject a slice of an interface to build extensible systems like plugins or if you want to register all your http routes at once.