Nostalga mostly. that and the characters are server side only, so when they go down, they are gone forever. And with blizzard's stance on world of warcraft servers (shutting down fan servers) that means this game will go the path of warcraft 2 battle.net edition and be neglected. Diablo 2 is still up and running, abit with a 30 day limit on character retension. so no leaving your characters sit on a server and expect them to wait for you. It is just easier to play offline and ignore ladder completely when i feel like playing for a bit.