I was a Mentor for a while, but quit because it was too depressing. Most new players never bothered answering me, or stopped answering halfway through the training.
I remember one new player who was very attentive, always asked questions and always thanked me profusely for helping him. When we finished the training, he thanked me again, told me I'd been really helpful in getting him into the game and then deleted his account 20 minutes later.
One thing I think would help with getting more mentors/keeping them is if they weren't a class. I would definitely help out as a mentor if I didn't have subclasses necessary to my characters RP.
