I am super paranoid about keeping the garage door closed. I have plenty of tools and R/C cars visible in there that would be sorely tempting to thief. My wife used to sort of protest that we live in a good neighborhood and people aren't likely to steal some Craftsman wrenches out of the garage. People are very likely to steal out of a "good" neighborhood - where better to steal from?

I get so worked up that I sometimes will even close the garage door even if I'm just in the backyard doing yard work.