Most people find this utterly unthinkable and seem to project their anxiety of not having a phone on to me. What about emergencies? How do you do this? How do you do that? What if this happens?
Truth is, most of those things don't happen and I get along just fine. I talk to people in my life via email or in person. I use videochat on my laptop to talk to people if we need a more intimate and immediate communication than email. I schedule things ahead of time and request that others please do their best to keep to that scheduled appointment. I'm ready to handle a few minutes of uncertainty if they're slightly late or be outright stood up in the case of genuine emergencies. Or I just tell people that I'll be available whenever and that they can come at their convenience between this hour and that hour.
I like my life this way. It's not bad. It's pretty okay.