Many people enjoy arenas and saying "they are horrible and should be abolished" is silly.
Keep in mind rated battlegrounds are coming back in Cataclysm and you will be able to get equivalent arena gear from bg's, so if you enjoy large scale, more strategic pvp but not rock-paper-scissors-arenas (such as me) you will be able to get decent pvp gear.
EDIT: Hunterwep beat me to the rated bg thing by a minute :P