We use a CB when on long trips. If we encounter foul language we change channels or turn it off.
Usually the foul language is around populated areas, but not always.
A CB can be valuable in case your stalled on side of highway and your cell phone doesn't work there. Or to search road conditions ahead. Especially in case of road closures for various reasons like accidents. Truckers are good about telling you of a detour.
A trucker told us one time our TV antenna was up. Also have been told about a low tire before we had the tire monitors.