I guess this is a cultural thing. In my country, a lot of people keep some of their money in a relatively safe spot in their houses as "just in case" money. It sounds unwise, but many banks have gone down under in times of crisis and it has taken people months to get their money back, even though it is guaranteed by the government. People even keep gold because if you have a crazy crisis and your currency is suddenly worth nothing, it helps to have something that isn't as devalued.

Anyway, this combined with the fact that in the city many buildings are apartments and not houses (and so you need to climb to get in) means that thieves don't steal large things often.

However the one that broke into my parent's house searched a few areas in the bedroom and successfully found the hidden safe, and proceeded to break into it.