Exposing these details allows "zero cost abstractions", which are important for a systems programming language. https://doc.rust-lang.org/beta/embedded-book/st

Exposing these details allows "zero cost abstractions", which are important for a systems programming language. https://doc.rust-lang.org/beta/embedded-book/static-guarantees/zero-cost-abstractions.html https://doc.rust-lang.org/beta/embedded-book/static-guarante... There are of course ways to get garbage collection, ignore these details, etc. in Rust with use of appropriate abstractions. But Rust may not be the best option for every application.