I am here for you.
I think we cannot imagine a world without them that would universally hold true because they exist and although they can be suppressed, they cannot be eradicated. Any attempt to describe such a situation has some emotion behind it. The reason i said without emotion we would not need ethics is because without emotion there would be no greed, envy, shame etc to incite us to act unethically. The trade off is the absence of the fun emotions. For some, that seems awful and for others an unfortunate but reasonable exchange, and for still others a great relief.