I would love to have my windows open, but having moved into a big city like FortWorth, you just can't. You have too many people that go around just looking for an open window in which to gain acces to your home for what ever reason.
Currently, I do know that in a city about 10 miles from me, they have had a series of break-ins where women were raped. You can understand my not wanting to invite trouble by keeping my windows open, but I do love to have a fresh breeze blowing through the house. Even at night.