I'm surprised to see that people choose anything other than C++ if they care about performance. Are you really trying to profile and optimise python and go? It will never be worth it! Just write the same thing in good modern C++ and you get an automatic 100x speed up for most cases. Then optimise to reach the absolute limits of the hardware. Python and go it seems!
Some people choose Go rather than C++ for the same reason you went with C++ rather than an assembly language.
Most of the time, things only need to be fast enough and trading speed for ease of development, deployment, and maintenance is an easy decision to make.
