Breaking In a Pane

How strange that we rely on panes of glass to keep us safe at night, when break ins loom. Glass is so fragile; breaks so easily. Yet we all feel safe behind sheets of glass. We install heavy dead-lock doors in brick, steel, wood and concrete walls. But in those walls and next to those doors are windows of easily breakable glass. All it takes is a tap on glass to break a pane, for entry in to gain, Then a thief's hand can reach in, and around, to open the door, Or the the intruder enters by clambering or crawling through a shattered window. Perhaps burglars are afraid of the pain of glass cuts, or the sound of glass breaking in? Perhaps it is bad luck to break a pane of glass, holding their reflection?