It is so relaxing to just listen to the rain when you are trying to sleep. It is almost hypnotic...
I usually fall asleep much faster this way, especially when there's a howling wind or a soft thunderstorm. It's nice...
It also creates an atmosphere, don't you think? Depending on how your home is furnished or lighting effects, it can become cozy or creepy, haha.
Just a random thought I'm having.