@soulcutter It's always felt situational to me. I usually ignore it by default, except:
* for mailing lists from legit companies I will sometimes unsubscribe
* for new user confirmations on certain services, I have sometimes tried to use the "this wasn't me" link when one is provided...always enlightening when these links don't actually work 🙄
* in a couple specific cases I have actually submitted customer support requests to demand an account be closed