Like, you aren’t necessarily next door neighbors. You’d have to take the streetcar or bus or commuter rail some distance to go meet your friend. You can’t text “sorry the train is 30 minutes late”, because no cell phones, no internet, no tracking buses or trains on your smartphone. No payphones or landlines.
Letters are only for those cross-continental, cross-oceanic relationships. If you live in the same city, then well you’d still have to meet in person cuz it’s not the digital age, no doomscrolling social media and sending texts and memes.
I feel like those were the days where you could have true friendships in society, not “having friends to send memes”.
They were certainly around before most people had a telephone.
My mother grew up in a household without a telephone. In a big city. She was born in 1951.