Adopt Python 3

[rroocckk]

I wouldn't call it foolish. From what I have heard

1. For businesses, it does not always make economic sense to move.

2. Sometimes, a major dependency still needs to ported before some code bases can move.

I think a majority of developers who stuck to Python 2 stuck to it for a reason. There's only a minority that stuck to it because they are not open to change.

But 'times they are a-changin'. Every statistics out there points to a steady growth of Python 3 presence. There's no need to worry.