Keep in mind that Jim LIKES doing cons; remember, he's a fan as well. It's just that going to so many of them together wear on him, as it would on anyone. But he's also savvy in regards to PR—authors benefit greatly from having a physical public presence, especially one as amiable, entertaining and interesting as his. It's what really hooked me into his books; I saw him at a con in '07, and between him and Shannon, I moved from simply liking his books a lot to thinking they're extremely good people who deserve our support. It's always a good thing when you can help reinforce people doing right.
It's a balance, in the end: between his own fan-ness and keeping a public image, there's got to be a happy medium.
^^^^^
THAT
I first met Jim in 2010 at NYCC ( Along with Shecky,Priscilla, and well MOST of the Mods) and it's hard to explain just meeting Jim the man, not the "product" had a VERY positive impact on me as a man. I met Shannon January 2011 at a con with Jim and seeing the two of them together you have a model of what a marriage SHOULD be.
Like Shecky said Jim LIKES cons as a fan Himself, but as a Professional they are draining EVERYONE wants to stop him on the show floor to sign something chat ect, and he never says no, bu he really just wants an hour to browse for himself. I have actually been part of a group "shielding" Jim so he could have a little time to browse and geek out and it was always "Let Jim have an hour and he'll be happy to chat and sign stuff after over at X place" Jim is THAT guy. They kicked him out of DragonCon for being a FIRE HAZARD so he took the line outside and signed there!
I can't say this enough I LIKE his work, but I LOVE him as a person, I love Shannon more, but then again so does he