I agree that, if your main reaction to the various approaches Rust supports is "why do I need all this?" that's a sign of a mismatch between your engineering go

I agree that, if your main reaction to the various approaches Rust supports is "why do I need all this?" that's a sign of a mismatch between your engineering goals and the functionality the language is providing. Either just pick an option and it will be fine (b/c rust is fast and has good checks) or pick another language that makes the choice for you and it will be fine because the compiler made the choice you did not want to.