It's a worthwhile endeavor if you think it is. Really, people learn all kinds of languages. It's a different perspective on how to do things. I learned Rust using the online tutorials, then I went and implemented N-Queens solution and a more complex dining philosophers solution. Do I use Rust at work? No, but I would like to do so. I think it's a decent language, although the lifetimes stuff can be a PITA.
Learn it, use it, and implement something. Have some fun!