That's not the point of the person you're responding to. They didn't say that the transition didn't happen. They said it's not yet known if it was worth it. All you're saying is that it happened.
I'm saying it happened and Python 3 is the language I want to use. If you don't do Python 3, you either keep the error prone str/unicode string model or you dream up some way to evolve to a better model. Would some mythical version of an evolved Python 2.x be better than what we have? I mean, how to argue against that? I haven't seen anyone propose a workable migration plan. Python 3.7 is better than 2.7.15 and better than 'tauthon'.
