I've played and tested just about every fantasy MMO since EQ. I played EQ for many years then decided it was time for something new and yes it was terribly hard leaving my Raid Guild and EQ since I had so much time invested. But 6 days a week PVE raiding was consuming to much of my time. So I moved on to some other MMO's - some I played for months and others on and off. WOW could keep me tied up for months at a time then I'd be just like I've seen it/done it and get bored.
Now -- I always tend to research the upcoming MMO's always keeping my eyes readily open to the next game that will really be a good fit for me. :D I mean I really like a game that I can do it all from PVP, PVE, Group and Solo, plus don't forget not succumb to complete boredom.
So RIFT is a definite plus!! I'm looking/hoping it will be the game but only time will tell. The other games that I am still considering outside Rift is Tera Online because the graphics are just sick (that means awesome) ;p and of course I'll have to try Diablo III.
Currently Playing: Aion - (Kera - Cleric, Rains - Ranger and Calysta - Chanter on Zikel)
Previous MMO's: WOW (Previous Hardcore Raider and PvPer), Warhammer (DOK and WE), Guild Wars, LOTR, AOC and EQ.
Other PC Games: Dragon Origins, Mass Effect, Mass Effect 2, Borderlands