I grew up in the city, and everyone kept their doors locked, I still do today especially at night. If someone wants to come in, they just knock or ring the doorbell, not a difficult task. I could never be one of those people who have a revolving front door, where neighbors and visitors just wander in whenever they like. I'm not always dressed for company...Ameriscot, I doubt if you look like a shaggy old granny just because you're wearing a tee shirt, lol...I'm often in tee shirt and sweats or shorts around the house, and even I don't look that bad!