When I began playing, I was in the (probably very small) group of people who've never played it before and have never seen anyone else play it, but who have read through an entire official guidebook multiple times. See, I decided I wanted to play this Warcraft thing but knew my computer wouldn't be able to handle it. Not having a video card at all was merely one of the clues. However I'm a practical girl when it comes to money, and the next time I had plenty of the stuff I picked up a copy. It'd take me a few months to put aside enough for that shiny new computer and I didn't want to find myself having just bought it... and not having enough left over to buy the actual game. I also picked up the official Bradygames guidebook (with the awesome Penny Arcade comic strips in it) so that I could figure out the very basics of the game before buying the new PC and installing it.
It took some 4-5 months (my savings fund got distracted by this thing called Christmas), but finally the new PC arrived and the game was installed. I'd had plenty of quality time with the guide and had a fair idea of what the different races and classes were like. I'm not ashamed to admit that I immediatly went for the Hunter class. Quite typical, I know, but the reason I'm not ashamed is because I never actually did join the legions of not-all-that-great-players-who-rolled-a-night-elf-hunter. See, for some obscure reason that I don't even understand myself I romanticised the idea of the Night Elf race and I romanticised the idea of the Hunter class, but point blank refused to combine the two. Don't ask me why cause I honestly have no idea. I wanted a human hunter. Not a Night Elf, not a Dwarf, and certainly not a Horde (I was too much of a good girl to play the 'bad' side).
What do you do when the combination of race and class that you want don't exist? You roll a Human Warrior. It made sense at the time. I think I remember having picked up on the fact that Night Elves were the typical choice of female players and I wanted to avoid being like everyone else. How I'd picked up on that I don't know. To this day the only races I haven't touched are Dwarves and Trolls (and Trolls only cause the Horde in general doesn't seem to work for me - I can never get past level 10ish) so for whatever reason Dwarves have never appealed to me at all. I liked the idea of a Gnome Warlock, seeing it as a sort of tiny pack of pure dynamite, but realised that this too was quite a common thing when someone mentioned to me that they were drawn to that class/race combo for the exact same reason. Having exhausted all the (then) options, the only race left for me to roll was Human. I couldn't think of any good reason not to and the race wasn't unappealing, so off I went.
The reason it was a Warrior was simply that I couldn't be a Hunter and it seemed to me as an 'easy' class to start with. You bang stuff over the head with a weapon, right? How hard could it be? Everything else seemed so technical with spells and healing and summoned demons and all these fancy abilities. Warriors, I decided, couldn't possibly be that complex. Give me a sword and a shield and I'll go around killing things until I've figured this Azeroth world out enough to brave something tougher!
Some 42 levels later I only had my Warrior and one other character, a level 6 Undead Rogue that I never quite figured out how to play and thus abandoned. Friends happened and OMG roll on my friends server! She'll help us out! and shortly after I had started fresh with a human Warlock on a PvP realm. Human because I still hadn't gotten over not wanting to do anything common.
(Mind you the actual numbers might show that there were and are more Human Warlocks than there are Gnome Warlocks. I have no idea, to be quite honest. Not to mention that Human in general is probably the most common class of all. This was all about what I believed in my head to be common and not, you know, actual facts. Afte rall, what I roll is 100% about what I feel happy playing and once I'd latched on to the idea that something was typical it'd take some time to let go of that.)
Around level 20ish my friends and I realised that our combo of Warrior, Warlock and Warlock weren't optimal for getting PUGs to instances and group quests. It seemed at the time that there were hardly any healers at all on our realm and since I hadn't fallen in love with the Warlock class I volunteered to re-roll Priest. Human, again, because I had good experience with the race and because my friend fully supported my belief that 'Night Elf = Stupid 12 yearold' was pretty much fact. (This was confirmed over and over with every single PUG group we ever touched.) I have now graciously adapted this belief to 'Night Elf = Stupid person that will wipe your group UNLESS it is someone you know not to be an idiot, or is level 70 and in a respectable guild'. And even then there are exceptions.
It took some time to catch up with my friends, obviously, and when I finally did the 'Lock died off on us (too busy with his raiding Druid on a different server) and the Warrior went SQUEEE DRAENEI and re-rolled Shaman the moment the expansion was out. I ended up leveling my budding Shadow Priest alone through most of her levels but didn't really mind. The first time I ever touched any other Alliance race was when I created my Gnome bank and when I, very guiltily, rolled Night Elf just to try some class. Probably Druid, but I really can't remember. As the months have gone by I've gotten over my dislike for the other races though, and I now operate a small army of Humans, Draenei and Night Elves. There will probably never be any Dwarves in it, but maybe some day I'll try something with a Gnome. It's unlikely though, as the only classes I lack are Shaman and Paladin, and as far as I can remember Gnomes can't be either.
Anyway, to get to the point of most Human insults out there: I really don't see why it's a not-cool thing to roll a Human in a fantasy game. I bought this game to play in a medieval-ish fantasy world and I'm quite content to play a Human living in this world. It's still very much a fantasy to me since this Human wanders around with Elves and Gnomes and Spacegoats, which obviously doesn't exist in real life. She travels through landscapes we'd never see here on Earth and battles magnificent monsters. To me the game is more than fantasy enough and I see no need to play a made-up race to make it a proper 'valid' fantasy. The argument that if you want to play a fantasy game you shouldn't play the race you actually are in real life is moot in my opinion. It's still pretty damn fantastic.
Then again, if I'd known then what I know now, I'd have re-rolled Draenei Priest when the expansion came purely for the racials. I mean, come on, Desperate Prayer? Crit heals me for around 600hp. What the hell is that about? At least I'll get Fear Ward tomorrow. Now that's a 'common' I'll whole-heartedly embrace!