Hollywood has vilified bats in many people’s minds. The myths about bats include the fear that they all carry rabies. Actually, very few ever do contract rabies and when they do, most often they do not become aggressive, but die rather quickly. (That doesn't mean you should ever pick up a bat, alive or dead, or any wild animal that can carry rabies.)
Bats are the only true flying mammals. While baby bats are born blind, they soon gain eyesight and can see quite well. Most are colorblind and they navigate by echolocation.
They are not attracted to hair but try to avoid humans as much as possible. While they may come close to a human if there is a swarm of insects around, their superb sense of echolocation can detect something as fine as a single human hair. Bats are not filthy as some think. They are actually quite clean and groom themselves like a cat.