Lol, I must be a bad millennial. I routinely forget my phone exists and leave it on my desk in my home office when I leave to run errands or w/e. It is funny when I notice though. I even am supposed to work from it during the day and yeah... Maybe that is why I never care. That and severe ADHD.
I mean I can use my own thoughts as an escape mechanism just fine, I've just had a medical emergency before when I didn't have my phone with me and really needed it, so I prefer to have my phone on me if possible.