Burning fury does, and if it makes me help people... whatever works, right?

There is a price to be paid. If you use fury and anger too much, you will become a furious and angry kind of person. Embrace the Dark Side and you will become one with it :-/

I'm just a kid who wants to grow up and study social science and try and help people.

Maybe :-) The reason you've met a certain... lack of enthusiasm about your anger for good causes is because you're not the first kid who wanted to help people and was furious about the injustice and the blindness of the world. And, let's just say, it does not always lead to good outcomes.