Some of us still think the old AFL rivalries are worth keeping. I'm not old enough to remember the AFL itself, but I am old enough to remember when we and the other former AFL teams were still considered interlopers on the snobby NFL scene.
I know Cleveland and Pittsburgh are geographically closer (and socioeconomically more similar) to us, but I still love the feeling of an old-time original AFL matchup. That's why I didn't really care when the Colts left the AFC East.
I get why people younger than me (I'm 39) don't understand this at all. But tough sh--.