I won't neglect my children or anything, but Star Wars: The Old Republic is going to take up a lot of my free time. As a friend of mine described it, "it's twice as awesome as World of Warcraft was at its height." I'm inclined to agree.
I played WoW for a little bit, and although it was fun to play with friends, it wasn't fun playing alone. With The Old Republic, there's a robust single-player aspect to it which I like. What makes that so rewarding is the fact that the game actually focuses on story-telling, and letting your character actively take part in what's going on.
Dialogue helps to achieve that. Bioware seemlessly integrated its conversation system--made popular by titles such as Star Wars: Knights of the Old Republic, Mass Effect, and Dragon Age--into a multiplayer experience. Your friends can actually take part in dialogue with the quest givers, and together you can decide the outcome of a quest. This actually makes the multiplayer aspect of the game more fulfilling than WoW, because instead of just completing the same quests along side your friends, you actually complete the quest together. Amazing.
Customization is also a major component that sets SW:TOR apart from WoW. Until recently, everyone in WoW looked the same, because everyone had to get to the same tier of endgame gear. Not the case in The Old Republic. The endgame gear is completely modified, and there are many gear pieces up to that point that are modified. Basically, you can extract the modifications from the endgame gear, and put those mods into the gear piece you like. It will cause the piece to upgrade in its level, and it becomes as strong as the original piece.
So basically, if you come across a piece of armor that you think looks cool, you can essentially use it for the entire game. It allows for a much more diverse range of choices in terms of your character's aesthetic, which is something that I think is absolutely essential to achieve in a game that is focused on the Star Wars universe.
Questing doesn't seem like such a horrifying grind. Flashpoints (instances) are fast paced and fun, and PvP is a blast. The replay value of TOR is ridiculous. There are 8 different classes in the game, and each one of them has their very own unique storyline. For MMO veterans, leveling 8 toons might sound like a horrifying grind, but it's not that bad. You could very feasably level up through PvP and only complete your class quests and the flashpoints.
Star Wars: The Old Republic is what an MMO should be. It's all about making your character a unique player in a genre that tries to streamline people, and it's all about telling a story that is worthy of being counted in the annals of the Star Wars universe.
Hats off to Bioware and what will likely be a massive success fitting of such a massive project.