To start with, I really, really need to never open my mouth and say I don't want to buy something, because every time I do that (Playstation 3, my Jeep, etc...) I end up buying whatever I said I didn't want to buy. I said that I didn't want to buy Rift because I beta tested the game, and it really felt just like World of Warcraft with better graphics. I was playing World of Warcraft with my friends, so paying to play another game just like it seemed silly.
And then Alienware started a contest to win a new laptop by trying the 7 day Rift trial and leveling a character past level 5. I entered the contest and wound up at the level limit of the trial (15). Then I ran out the next day and bought the collectors edition.
You see, Rift is not really just like WoW. It's close enough to feel comfortable, but it adds elements from Everquest 2, Warhammer Online, Lord of the Rings Online, and dozens of other past MMOs. So it feels like an old flame dressed in a hot new outfit. You already know what she is like in a relationship, but damned if you don't have a couple of drinks and wind up in the sack with her anyway.
I've also made the self discovery that I don't like the endgame of most MMOs. I love leveling up and discovering the story and exploring the new areas as they come, but once I hit the level cap and work through most of the content, I don't want to keep doing it over and over forever just to get new gear. I wind up leaving until an expansion or sequel comes out. I've done it with WoW every time I finish an expansion, and I've done it with a bunch of other games. I left WoW recently because I think Blizzard made a mistake and this newest expansion was too short. I finished it, did all of the dungeons a few times, and even raided a bit. Then I burned out. I'm sure Rift is headed to the same fate, but... Oh well. I'll enjoy the ride until then!