Our city is a very safe city. The biggest crime is bicycle theft and even then people say they were just borrowing them. It is common for people to walk in the city until 1 or 2 in the morning.
Yet the Italians still love their security. To get into our house it takes a minimum of three keys and up to nine keys. I'm not kidding. Nine keys. Our keychains are gigantic and we don't even have car keys on them. We have to pass through three locked doors before we are inside and each door locks automatically behind us.
It is, however, a gorgeous entry. With the exception of adding elecricity to the chandeliers, I don't think it has changed much in 500 years.
So I really don't mind pausing to use my nine keys.