i'm fans of people for different reasons too...
i guess with my boys (Nsync) ive been a fan for 5 years, and on top of loving their music and thinking they're hot i grew attached to them for another reason too... being a fan of nsync took my attention off of other things that were bothering me in my life, i put the attention that i would normally have other places into my fandom... and they helped me through alot!
with Vanessa a couple of her songs did touch me and is why i'm such a big fan now! A Thousand Miles came out around the time my grandma was dying from cancer/died and that song made her think of her and kinda put me at peace with the whole thing! i cried the first time i heard "Paradise" and that song is one of the main things that helped me overcome a problem.
i'm also a big fan of Samantha Mumba, i really started being a fan when i met her for the first time. and she was one of the sweetest people ive ever met. so besides loving her music i love how down to earth she is! ive met her three times in total now and she gets nicer every time! (she's the only one of my favorites ive listed that ive met)
and Evanescence which is the latest band i'm a big fan of... i think i just became a fan of them cause of their powerful lyrics, great music, and Amy's beautiful voice! and seeing them in concert made me a bigger fan, especially when Ben and Amy were kind enough to wave back at me! a couple of their songs have touched me too... and i love all the songs!
i become fans for many different reasons... but those are the only 4 i'm crazy about now!