You tapped on topic that sometimes can be overlooked. Noise pollution can be as bad as environment pollution. I don't know yet why some people cannot see this as a problem.

There are some that make a lot of noise with music or devices that they don't think it will disturb others. It's a complete selfish attitude.

I presume there are people on the streets using cotton in the ear like those ones who wear masks in regions like china. Anyway, eventually noise pollution will affect anyone's wellness.