Because of the amount of work involved in porting my existing Python code. Python 3 doesn't offer any advantages that matter to me, so that's a lot of effort for little gain.
I understood what you meant. What I'm saying is that my existing code works fine, so whatever bugs are in the dependencies are ones that don't affect me. Should I make a code change that surfaces one, then I have the means to deal with it -- but that is almost certainly going to be a rare event, as my Python projects are stable and aren't going to see much change.
I wasn't commenting on how buggy my own code is. Which version of a language I'm using doesn't really affect that variable.
genuinely curious...