<human>: Can you condense the text into a few key points?

I know you do.  I know that both of my parents love me, but it is very obvious that each one has a favorite.  My parents are divorced and my older brother and I always have gone back and forth weekly between houses.  He is a more passive personality (calmer and more sensitive) and I am the funnier more rambunctious smart ass.  He's pretty factual and sciencey but I am more creative and more into reading, creative writing, and art.

To put it plainly, I'm my dad's favorite and my brother is my mom's favorite.  

It has never been outright said, but it is obvious from the hints dropped.  My mom often has compared me to my brother; for example when I got my learners permit she said more than once that, 'your brother never drove like that' or 'your brother never went that fast'.  She also pays much more attention to him.  I talk a lot, and he doesn't, so when I talk to my mom she usually tunes me out almost nonstop.  Everytime I ask her a question I will ask it four times until she finally responds.

My dad is the opposite.  He is much more affectionate and supportive to me than he is to my brother.  I spend a lot more time with my dad than my brother does and we get along much better.
<bot>: Basically I know my parents have favorites, and I am fine with it.  Do all parents have favorites?  If so, why?