Interesting Thread.
I loved my CB back in the day. But on my final trip up the ALCAN ('07) it was little to no use; just not enough traffic, truckers, 4 lane highways etc. Also was of little use here in Alaska. So when I sold the truck in 2011, I let the CB go with it.
When/if I get to snowbird and travel around the lower 48, this is something I wonder if its worth mounting up and having. As others have stated, if others are using it, mainly truckers, it does get you solid real time advice and warnings about road conditions, accidents, construction, etc safely while you are driving. A lot of my uses were similar to Alaska snowbirds examples too.
If oncoming traffic doesn't have your cell # they can't call and warn you. We all agree flipping thru your cell while driving is a bad idea. APPs aren't always immediately up-to-date with conditions either.