Originally posted by Zep Tepi:

Most of the time, not using a chimney is just a personal choice. Other times, bats. No one wants a flaming rat with wings inside their home.

I kind of do, now that you planted the image in my head. But only virtually ... not into hurting critters any more than necessary (eg I will kill a pest, but not set it on fire).
If I could trap a V bat perpetually on fire in my home, I totally would.