They're tiny, they're weak, they're easily killed. And yet...
They eat clothes. Specifically, they eat nice clothes. How useless is that? They dive-bomb your porch light, or, if they've managed to get inside, any other light they can find. And somehow they manage not to injure themselves, even while making enough noise to imply that they have been reduced into little heaps of gossamer and exoskeleton.
It is totally unfair that moths are stupid enough to bash themselves into any surface that presents itself and yet to be uninjured.
And stop eating my sweaters.