As much as I'd like everybody to be using Python 3, the truth is there's not a lot of immediate benefits, which is why 85% of Python users are still using 2.x.
As a Python user myself, the better, more reliable Unicode-by-default string handling in Python 3 is more than enough of an immediate benefit that I've stopped installing Python 2.x on my devices entirely at this point. Obviously, ymmv, but there seem to me to be a lot of immediate benefits to Python users and what feet dragging remains to stay in 2.x seems more like a political protest of some sort than one focused on actual benefits.