The reading aspect will always be the "most difficult" part of it for me... but not for actual difficulty reasons. Reading requires that I put my usual conclusions to the side, in some cases, or (in the case of group games) skip posts altogether. RPers have a typical habit of being redundant with their posts (and I'm no exception) so I have to wait extended periods, at times, just so I don't feel like I'm reading the same post twice. Problem is, that doesn't always stop the "I've read this before" feeling.
I'm like this with a lot of reading, though. Published works, non-published, whatever... You could argue I simply dislike reading on a general level, but that wouldn't be fully true considering that reading permeates everything I do. (Games, movies, RPing, chatting online, etc)