and dean gets the demon blood instead?

sam’s the older brother who takes orders and ignores his potential because he pours himself into keeping dean safe and dean follows in his footsteps, but he’s never really disillusioned with the life the way sam is 

sam remembers life before the fire, misses it, but ignores it

dean doesn’t remember life before the fire, doesn’t care about it, doesn’t want it, and thinks that Ramble On is the way to live a life. He pities people who have to stay in one place and don’t have adventure or roads or sam.

I think Dean was really good at Algebra. 

He didn’t expect to actually like the class and he was secretly pleased that he had to take it twice when they moved in the middle of the year.

Algebra was balanced. Algebra was a hunt in of itself. Algebra made sense. He could find solutions in algebra when everything else in his life was off kilter and his teachers, once getting over the assumption that the kid in the over-sized leather jacket who introduced himself as ‘Dean Fuckin’ Winchester, remember it’ was cheating, were impressed and knowing that he’d blown away someone who had underestimated him made Dean feel good. 

On the day of the final test Dean was waist deep in mud, rain beating down on his back as he dug in to the grave of an old bandit who wouldn’t take ‘You’re dead’ as a good reason to stop slitting throats. He failed the test and dropped out of high school shortly after.

Dean was good at Algebra. He liked it. 

Algebra was never going to help him save lives.