I actually never tried Elder Scrolls Online but I get it.... oh boy do I get it.
My drug of choice is EverCrack. I played EverQuest for 8 years, moved on to EverQuest2, switched to World of Warcraft, tried Star Wars: Galaxies and even gave Rift a shot. Every single time I try to get away I always come back to EverQuest.
Right now I am on a time-locked progression server called Phinigel. I never got to play from Day 1 so this was a new way to try something I have been playing for 15 years - no mean trick there. Nothing feels like the original. Nothing plays like it. The first 10 seconds sum it up nicely: