This is not just about providing food. Thats my whole point. You may be able to provide sustance with less ground/light, but what about keeping the soil fertle

This is not just about providing food. Thats my whole point. You may be able to provide sustance with less ground/light, but what about keeping the soil fertle ? How about dealing with plant waste ? What do you do with table scraps ? What do you do with human waste ? You could say we will ship out machines and supplies to take care of all the _other_ stuff that you need to live. It is true you can have other methods to deal with some of the additional requirements of life, but animals are really good at fulfilling some roles. Additionally they are tasty.