I know your joking, but the premise of your original comment was that morality is black and white. If this is true for you, then yes, you'd have to voluntarily stop eating. :)

Personally, I take the position that everything I do probably has a negative impact somewhere. Taking the car, bus, train, or staying at home all have consequences for the environment. While I don't lock myself in my apartment, I do regularly review my lifestyle choices and see if they align with my values.

The same is true of the food I eat, both from an environmental point of view as well as how much suffering is involved.