Also, people want to do something with their hands while watching things, and not everyone knits or (especially, these day) smokes, or pops popcorn before every movie they watch at home. Bet a huge percentage does something else while watching TV/movies. Sudoku books, whatever.
I live in the city now, and city background certainly doesn't bother me. But I don't feel a desire to artificially adding more.
Is silence that bad?
As to why people started doing that to begin with: dunno. Sports being on often, so having the TV on just becomes normal? Not sure.
Like many social behaviors, you could map it pretty well to one or more Fussellian class, in the US at least.
At the risk of sounding bougie, it seems kind of trashy to me to just constantly keep the TV on. Echoes of 1984's mandatory viewing, coupled with ignorance of advertising's effect on your brain.
But I've certainly observed that people fall fairly heavily into one category or the other. Either they can't stand it not being on, or they can't stand it being on.
The closest I can come to explaining where my distaste seems to come from is wasted opportunity.
In the modern era, we have unrivaled access to the thing (e.g. the musical piece, specific performance, news report, piece of information, best show or movie of all time) itself. And yet we're so in need of filler that we're willing to put any damn thing on?
That seems close to it, as I don't have nearly the adverse gut reaction to music as I do to television. Or even to television-sans-ads to television-with-ads.
“I haven’t owned a TV in 10 years. Does anyone still watch TV”?
But more to the point. Between Netflix, Hulu with No Commercials, Amazon Prime Video, and occasionally CBS All Access w/no commercials and STARZ, I hardly ever see commercially.
This probably isn't healthy but it's the easy coping mechanism for the problem of not socializing enough.
This is at least partially related to my own difficulties in directing my attention. What I can’t hear can’t distract me from what I want to be focusing on. Music is also good for this.