I reminded OH to shut the bathroom window before bedtime, because it is a safety issue. He said, why? I said, because it's not safe to leave it open all night, it's not a small window, it'll be an easy entry point for burglars. He said I was weird to think this and that burglars do not particularly want to use a ladder to get into someone's house via an open window on the 1st floor. I was just so shocked that he can even think that! Please fellow mumsnetters, tell me I'm not being unreasonable to think this!