Irene must have brought them from the south, or at least excited them out of some state of hibernation. I was doing yard work, and watched them swarm out of the grass, riled by the rake or something, out for blood and retribution. They found it. I calculate that several thousand eggs would be laid by those successful females, using my blood. Yes, it is only the females that bite; they need blood proteins not for food but to develop their eggs. For food both sexes eat nectar (how sweet).
At best, the mosquito is a completely useless animal. Not even birds and fish would miss them - mosquitoes are a minuscule part of their diets. At worst, they infect hundreds of millions of people with malaria, dengue fever, and yellow fever. It's rare that a creature of nature has no benefit. Even politicians do some good, here and there.
In effect, I've found that nothing that buzzes or whines is any good - not mosquitoes, wasps, flies, historic biplanes, or Republican presidential candidates. Don't you wonder why there are these evolutionary (or creationistic, for that matter) dead ends? Michelle Bachmann, who seems to have a direct line to God about his use of earthquakes and hurricanes for retribution, might know. Even better, let's ask Rick Perry - he was autographing Bibles recently, and one can only assume he signed as Its Author.