3 years? If I'm not mistaken game started in 2011 (unless you are referring to the beta testing process, etc)
Thing is though, I just want to point out that the game was a very different version at launch to what it is now - it is currently far more polished and enjoyable with a host of new features. I lot of people did not like the launch version of Rift, and it really is a testament to Trion that they had the courage to say "this didn't work, time to change".
Rifts were not even solo able until 1.5 or 1.6. This is why all these random peeps coming in here and saying "Rift sucks, tried it at launch" or whatever may have been justified in their opinion back then, but Telara has changed 180 degrees and is now infinitely better. 10 patches man, 10 patches - with features and raids introduced in hotfixes between.