Windows aren't really the problem. Windows are dangerous to be near for the raiding party. To raid proof a dwelling you need things that slow down entry, things

Windows aren't really the problem. Windows are dangerous to be near for the raiding party. To raid proof a dwelling you need things that slow down entry, things that trip, bright lights or sounds that let a raiding party know they've lost the element of surprise, and some form of early warning before someone has reached a breach point such as a door.