this is silly, python is used by some of the biggest number crunchers on earth ... as glue code. If you dont like the dual language paradigm and want fast code go learn fortran.
im not sure the drifter-bro-waster life of idle leisure is that satisfying. Your telling me people at the top of their careers, yan le cun (deep learning etc) are not having constructive, exiting, shared, social fun? you think hans zimmer has an isolated boring life? stress in any case has more to do with context and attitude than it has to do with the profession you practice.