I'm not sure anyone is suggesting we destroy every last living cockroach on the planet. This is more about keeping them out of living/sleeping/food areas. They

I'm not sure anyone is suggesting we destroy every last living cockroach on the planet. This is more about keeping them out of living/sleeping/food areas. They can carry disease, for one thing. These aren't things you want freely crawling around a restaurant kitchen, for example. It's no different than not wanting your home to become infested with bees, or ants, or anything else that's also very important to our world.