> but how much effort is really required to move to 3? Rewriting print statements and changing a couple import statements?

Most important -- risk. Risk that stuff will break. One of the biggest ones is change to the .keys(), .values() to behave like iterkeys.

Also unicode vs byte strings.

Also time. And time = $ in most places.

So far need the benefits are just not there. It is something like this:

benefit(switch) = code_improvements - time - risk + possible_future_benefits

(time has an opportunity cost folded into it, if I am porting to 3 I am not working on other stuff).

So far benefit is either negative or just too small for me.