I haven't spent 5 months in Antarctic solitude like Byrd, but I did live on a bicycle for a year while circling North America. I'd go multiple days without seeing anyone else, sometimes in the desert and sometimes in the forest. It changed my life, in ways that's hard to communicate to people who haven't spent time in actual solitude.

These days I live in a fairly remote part of Alaska, but we have good cell coverage here now. It's different being in wilderness while still having the possibility of being connected. I feel different when I get into a valley where there's no coverage. I'm tempted to get a satellite device for emergencies, but part of me relishes the impossibility of contact with the outside world for a time. That's a good issue to wrestle with.

If you haven't experienced true solitude yet, go find some. It's pretty grounding.