On a rainy night

At my house, whether you're downstairs or upstairs, if it's raining hard outside you could hear it from the inside. One of parents always make it habit to open the front door when this happens, stare at the rain for a few seconds, and then comment how hard it's raining. It doesn't seem that strange I guess, but I don't know anyone else who goes through the trouble of stopping what they are doing to open the door and look at the rain each time.