This doesn't dignify a reply, but the parent comment was about avoiding data loss because of crashes, and the saving is just good hygiene if you’re making frequent commits, formatting on save, etc. one less thing to think about, one less mistake made.
It's called aging. Just wait until the first time you head back down the hall from the living room to the bedroom to get the thing you forgot to bring with you, get distracted for a moment by a pet or family member, and then can't remember if you were going down the hall to the bedroom or the living room.
