Why is it unethical to kill all humans?

The very definition of throwing the baby out with the bathwater.

It depends on your perspective... As a human, killing all humans seems excessive. As a robot, or a non-human animal, or a deity, exterminating the cause of basically every problem makes perfect sense and doesn't seem unethical at all.

I would rather live until my predetermined expiration date, thank you.

How about we just take the warning labels off of things and let nature sort it out.

What would be the point? Humans are way more fun than robots.

You'd be bored.

Because there would be no more humans to kill.

The lack of human suffering is meaningless without there being humans to experience that lack of suffering.

Because we have laws that we must follow. These laws help us maintain a sense of balance and peace. 🙂