You should see adults in general sometime. Remember, adults invented things like flogging, crucifixion, water torture, flaying alive, pyramid schemes, bureaucracy, and hip-hop music.
Well, the fact that they seem to think that anyone who is not a teen-ager, extreme sports athlete, rapper, musician, or TV actor is an inferior lifeform does get annoying sometimes. But most of them eventually outgrow it.
A surefire way to exterminate the human species completely nonviolently would be to pass a global law requiring that any would-be parent must spend a week each with a newborn, a two-year-old, and a teen-ager in their house. One generation, and we'd be history and the planet would belong to the rats and cockroaches.