I totally agree. However, until Py3 is packaged standard it's always going to be easier to run Py2 code. For example, I have a friend who does data analysis on OSX and occasionally she gets data in a format that is ugly. I take a look at it and send her a python script that will massage it into something nice.

She's ok with the occasional "sudo pip install ..." to get a library, but if my instructions started with "ok, first install Xcode and then install homebrew" the answer would probably be "it's ok I'll just do it by hand"