Compile-time function evaluation, superb metaprogramming and easy to write at a very low-level while you can enjoy the GC for non-perf critical parts. I use tho

Compile-time function evaluation, superb metaprogramming and easy to write at a very low-level while you can enjoy the GC for non-perf critical parts. I use those daily in cryptography, VM/interpreter and bigint libraries development and in Nim it's a blast.