I've been on both ends of this. I don't believe i did much whining on feralheart as i did wolfquest, but doesn't mean I'm innocent.
Many of the times where it has happened with me is when i was in a depression, mainly during middle school and the beginning of highschool. I'd be complaining about, lets say in this case since it was around the time, my parents splitting up. Many told me to voice my opinion of wanting visitations with the other parent, though i never actually bothered heeding his advice. Why? Im not sure. I suppose just the tenseness of the situation frightened me a long while ago and i didnt want to seem as if i favored one over the other. Though it wasnt just that, I would always be a 'pity me' brat about it. I would exaggerate most of the time, merely for attention as much as i hate to admit it. Im pretty sure i annoyed my close friends to death with all of it.
Then again, I was quite young at the time and thought i knew everything. Now I'm currently 19 and i just look back at some of those events thinking, 'what on earth was wrong with me?' I usually dont crave attention anymore. If anything, i try to avoid any sort of acknowledgement since it isnt in my personality to be in the spotlight.
There's been many times with friends and others in game, even my family has done this before, where they acted like a selfish baby. I have a really high tolerance though, probably more than i should and normally just try to calm whoever down. And when it doesnt work, i think of a way to change the subject, make them laugh, etc. At least if they were being too stubborn to help, i could always joke around with them and make them smile, even if its only a little.
So don't feel bad for being one. I'm quite positive we all have at some point. Some of us matured beyond that point, some of us stay in that mentality for a bit longer.