I struggle with insomnia, and can't sleep if a room is completely silent. My husband dislikes "fan" noise, so this machine is a nice compromise for both of us. The sound effects are pleasant and very relaxing (thunder & summer night are our favorites so far!) and I appreciate the timer option so it doesn't need to run all night. The machine is plug & play and very easy to use. [This review was collected as part of a promotion.]