Honestly, while I totally get the other people's frustration with that, I've always found it to be interesting. It gives the game more replayability when you decide to play a game as a different class or as a class of your own creation. It gives a sense of history to your character which I've always thought was the entire point behind roleplaying games. That's what irks me about the "blank slate" that Skyrim takes. Apparently, you're playing as someone who, up until the very moment the game starts, had been encased in formaldehyde and an absolute burden on society for decades. The person simply hasn't gained any skills or has little to no expertise in anything until you start playing the game. It really makes the first 15 levels or so a chore because everyone's going to be playing those first 10-15 levels a few different ways (warrior, mage or rogue and Akatosh help you if you choose to hybrid class early on) whereas in Daggerfall, Morrowind and Oblivion, there were a myriad of different playstyles depending on the class (or even background, in Daggerfall's case) that I chose. I know it isn't streamlined or marketable but it's what makes RPGs so interesting.