OO is about managing state. Generally, stateless code is easier to test and maintain. Around 2012 I started writing mostly functional code (in C++) to scratch

OO is about managing state. Generally, stateless code is easier to test and maintain. Around 2012 I started writing mostly functional code (in C++) to scratch my own maintainability itch. I kept doing it through a long sojourn in JavaScript and now Python. I haven’t looked back.