In some ways I miss my time as an R programmer. Back then I could type R and make various sorts of rough useful plots of data quickly. 10 years of nonstop programming later, I no longer use R, and I cannot make rough useful plots quickly in either Python or JS. (There is nothing quick about activating the right virtualenv, starting a jupyter server, getting a notebook running, and trying to remember how to import and use matplotlib. And JS is worse).