Man I hear ya.. when I was 6, and I figured out what death really meant.. scientifically speaking, I worried. I saw all of these people dying, and worried about the how, why, when... what if...
Don't worry about it man... know its coming... live each day like its your last... don't regret loving, and try not to hold on to hate... I've done a lot of that..
You're going onto the corp.... I hope for you that you don't.... but I'm sure you'll probably see and hear about more death than you'll ever want too....