Pointless Creatures

Is there any point in the existence of wasps?

They seem to exist purely so that they can fly in through open windows, sting everything in sight, and then knock themselves senseless trying to get out again. Hardly the most glorious of ecological niches.

Bees are different - bees have a purpose. They pollinate things, and, as I am given to understand, procreate with birds. Plus they don't maliciously sting people just for amusement, because they end up leaving half of their internal organs embedded in your skin, which apparently hurts them more than it hurts you.

When the sun goes down and all the wasps fly back, contented in their evil deeds of the day, to whatever diabolic pit they came from, a new pointless creature emerges. Those tiny, tiny little flying things that are attracted to electric lights.

Evolution has clearly gone completely tits-up here - what kind of nocturnal creature is attracted to light? I have no idea what these things eat, but I'm willing to bet that its prey doesn't look like a flourescent light. You would have thought that natural selection would have operated to make extinct a creature that spends all its time flying into electric lights, but it doesn't seem to have happened yet. Darwin, shmarwin.