Why Did I Do That?

So last week, my little brother came home from school with this big project on ancient civilizations that he completely forgot to work on. He’s only in third grade, but seriously, how was I supposed to know it was a thing? Anyway, before Mom and Dad got back, I thought I'd help him out by finishing the project for him. It wasn't hard, I just used my notes from history class last semester. But now, sitting here on Sunday night while he's getting praise and gold stars for his work, all I can think about is how unfair it feels. Did I do this because deep down I wanted to be his hero or because I couldn't handle the idea of him failing? Or maybe it’s just that I’m tired of being the one who always has to take care of things around here. Ugh, what a mess.