Man made noise is certainly a nuisance, but I think “nature” is not always as quiet as we like to think.
A few years ago I spent a week out in the middle of the Costa Rican jungle — miles from anyone. One thing that stuck with me was how loud the jungle was, especially at night. The bugs would start buzzing around dusk, the frogs would add to the chorus around midnight with loud croaking, and then in the wee hours of the morning we’d be treated to the piercing shrieks of monkeys.
Not exactly an ideal soundscape for a peaceful night’s sleep or quiet reflection.