Agreed. They allow you to naturally create vectors with the bracket delimiter `vec![1, 2, 3]`, create spawn-like macros with the brace delimiter `spawn { code }

Agreed. They allow you to naturally create vectors with the bracket delimiter `vec![1, 2, 3]`, create spawn-like macros with the brace delimiter `spawn { code }`, and in the normal case just use parentheses `println!("testing")`