I use
Skype recorder for recording my personal calls as well as all my business calls.
I record all calls when
outsourcing my business tasks. I also record all my business calls and all calls with my bank, insurance agent, shops,.... It is very important to have such recordings in case of any dispute or even a law suit.
I also record my calls with my family. I just want to save some of them as family history.
And I record online training sessions like language lessons.