Bats are wonderful beasts. I have them in my roof and always have, and I'm proud of it. I love sitting out (glass in hand) on a warm evening admiring their sheer skill in catching insects. A couple of times we've had one in our bedroom, but a cheapo kids' fishing net is all it takes to gently remove the accidental intruder back outside. Have a close look at a bat if you can. They are elegant and beautiful and perfectly adapted to their environment.