I was for several years. We were using git submodules to handle dependencies, but still using third party packages involves copy paste a lot. `std::variant` was the one we use to mimic the rust `enum` but it is much cumbersome to use, and not safe at all, there was no compiler checked `match`. Sure, single threaded code is much better, but this won't help with buffer overrun, or use after free like `String("hello").c_str()`, or iterator invalidation when you loop and delete, you just gradually learn all those gotchas along the way while bearing the learning cost. Trust me, experienced devs appreciate Rust much more if they are actually good at writing memory safe code.