And so the age starts where we rewrite in Go for performance all cool things Ruby, Python...
I'd much rather see neat algorithms and libraries being re-written in C with an FFI-friendly API. I think it would reduce the number of "Show HN: I rewrote X in Y" posts. The majority of HN users rarely care about Y. Such posts are just attention-grabbing noise.
If it was written in C you could just write bindings to it in Y and nobody but Y developers would need to hear about it. Instead we could read about X on HN. X is interesting.
It doesn't seem right that we can't leverage libraries in other languages without significant effort.