I'll explain why I'm no longer vegetarian.
The earliest life was just players versus environment.
Environment is the Tree of Life.
At some point, an organism analogous to Adam, partook of another who we shall liken to Eve.
Partaking of players is eating from the Tree of the Knowledge of Good and Evil.
Up to that point, all consumption had happened in parallel with no serial foodchain.
Plants are therefore the purest, most sin free lifeforms
and grazers are committing the SIN of initiating a foodchain.
"If killing plants is now a sin, how do we clear land for development."
We let our herd clear vegetation to provide us surfaces upon which to build edifices,
then we eat them as punishment.