Do you actually play oblivion? Do you know that, training your major skills from your class actually hurts you because enemies scale faster? Do you know that a fair number of people actually choose skills they DON'T use as their major skills to avoid leveling?
http://www.uesp.net/wiki/Oblivion:Under_Leveling
What does Oblivion's broken leveling system have to do with the fact that someone who practised magic their entire lives shouldn't have the exact same skill proficiencies as someone that scorned and never used magic?
I don't need a pointless class-designation system to allow me to roleplay.
Sure, if you wish to roleplay someone that was born the day before you got on that wagon.
The class system is basically forbidding you any change.... With the class system, that kind of short-sighted vision of the world is set to rule. That's horrible.
Actually that's how it is now with the perk system. Good luck being a painter after you spent all your perks in football skills.
Sure a great thing. As you like to link it to reality, did you choose your profession in the craddle? Did you really take the first profession you wanted to be as a child?
Our characters weren't born just prior to getting on that wagon. They had their entire lives before that.

You do realize that in past games, even if your character "spent his whole life studying magic", he still started at level 1, and was totally incompetent in his skills, correct???
I never said it was perfect, but something is better than nothing.
Just another baseless complaint about Skyrim that has no actual validity in reality.
Yeah, how dare I wish to maintain roleplaying integrity in a supposed RPG?!? That's totally baseless! I may as well complain about not being able to jump at all in a platformer game.
Yeh... Cuz in Oblivion, when I picked "Assassin" I was immediately much more deadly attacking with a dagger than a mage...... oh, wait....
When did I ever say you could make your class and then be a grandmaster and never have to raise another skill point again? It was a little something that aided roleplaying in an RPG. It made sure pure Mage's, pure Warriors, pure Theives, or any combo you can think of didn't have identical skill proficiencies at start.