It's important to learn to cope with people who aggravate you, because you don't always get to choose who you spend the most time with. Maybe you've got annoying family members. Maybe some of your classmates get on your nerves. Maybe it's certain coworkers who grate on you a little.
Or maybe you've been shot, gutted, caped, had your hide stretched over a manikin form and hung on the wall between a couple of yammering OMG PWNIES OMGs.