This article
says, “Watching television improves your social life and widens your circle of friends – but only in your imagination.”
It also says, “the brain’s mechanisms for recognizing friends evolved long before television came along so the subconscious counted any face it saw regularly as a real-life friend, even it if was on TV.”
If the study is correct, that would explain why (for TV addicts like me, at least) it feels so bad when a favorite TV show is canceled or a favorite character is dropped from a TV show.
It would also explain why “Friends” is the perfect name for a TV show, and would explain why the lyrics from the “Cheers” theme song are so appealing ("where everybody knows your name’).