Seriously easier than DPS?
I started as a THM and am 26 now... and I feel as though this has been the easiest class to play in any MMO ever. I have about 4 buttons to worry about and that is if I care to help out and put an add to sleep.
See, we're coming at this from different angles. "In any MMO ever" implies that you've played others; for those of us who are standard-RPG veterans but have never touched an MMO, the Thaumaturge/Black Mage is so wildly different from the way this class would be expected to operate that the frustration starts to pile up, whereas the Conjurer class, and particularly the Healer role when in parties, functions just about exactly like you would expect it to.
Not only does white magic basically do what it says on the tin; targeting is also straight out of old-school RPGs, with you being able to use the directional arrows to move up and down the list of allies rather than having to awkwardly try to select them based on their positions on the field.
The solo part of Conjurer wasn't much fun -- throwing stones at the enemies and then healing myself gets boring -- but party play is a joy. It's going to get harder, I know, but the learning curve is just right, so when the difficulty increases, I'll be ready. The other classes I've attempted have too many non-intuitive MMO-specific elements and would, for newcomers, be better as secondary classes.
