It's a powerful alternative to Rust and C++ for writing ultra low latency code when safety isn't important, like games or HFT. Its standard library and ecosystem have excellent support for passing around allocators and no hidden dynamic allocation (every function that allocates takes an allocator as a parameter), which makes it much harder to hit the latency pitfalls common to Rust and C++. It also encourages the latency-optimal approach of using local bump-a-pointer arena allocators where possible rather than the slow global allocator. And finally, the superior metaprogramming support makes it more convenient to use high performance techniques like struct-of-arrays.