Humanity should respect animals.

[Tenet Nosce]

What other branch of philosophy would you suggest?

How about a teleological approach? This might begin by asking: What is the purpose of Life?

The purpose of Life is to express itself in physical form. This much is self-evident. Life probably has many other purposes- and some of them even ethical- but the one thing we have empirical evidence for- something we can stand upon as evidence- is that the purpose of life is to express itself in physical form.

What sets humanity apart from all other physical lifeforms is that it can contemplate the purpose of Life. This is a primary attribute of a 3D entity, with perhaps some overlap with late-2D entities.

Humans have a choice. We can either work with nature or work against it. Obviously, much of our known history has been about teach/learning what happens when we work against nature. Raising animals for food is but one aspect of this. Growing plants for food is another aspect. From this perspective, these are not two issues, but one and the same issue.

At some point in the future (hopefully very, very soon!) humanity will decide it is time to teach/learn the lessons of working with nature.

No doubt, the raising of animals for food will become much less prevalent, because it won't be as necessary. Although, biodynamic farms do require animals to function.

But the larger question is what relationship do we, as human beings, want to have in relation to the purpose of Life. And if the answer is that we want to support the purpose of Life then our course has been set for us.

We should do whatever is necessary to enable Life to maximally express itself in physical form.

The Law of One says that there is but one Life. One creative spirit, that is expressing itself in physical form.

Preservation of form (nurture/defense) is a function of life along with creation of form (reproduction) and destruction of form (death).

Therefore, a humanity in alignment with the purpose of Life would seek to act to create catalyst for these three functions of Life. And from this, we would conclude that it is not appropriate for humanity to elevate one of these functions- preservation of form- over the others. To do this would create an imbalance in the system. In many ways, it already has.

So when I envision a 4D society, what I also see is that humanity has accepted full responsibility as stewards for Life on Earth.

But a steward is more than a protector. A steward must also wield the power to destroy forms where it is found their perpetuation inhibits the maximal expression of Life.