I've done this on occasion as a last resort with misophonia - that music that I know doesn't set this off is better than enduring a noise that does set it off - cue someone on a train sitting next to me and proceeding to eat chips, and me having the option of either getting out of the carriage or stuffing earphones in that at least aren't making that noise.
Maybe neurotypical folks follow a similar idea?
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Alexithymia - 147 points.
Low-Verbal.