In regards to eating meat

[Monica]

Diana listed logical, reasonable reasons, not justifications.

That's the definition of a justification.

from http://en.wikipedia.org/wiki/Justification

Justification
From Wikipedia, the free encyclopedia
Justification may refer to:
Theory of justification, a part of epistemology that attempts to understand the justification of propositions and beliefs
Justification (jurisprudence), defence in a prosecution for a criminal offense
Justification (theology), God's act of declaring or making a sinner righteous before God
Justification (typesetting), a kind of typographic alignment
In mathematical logic, a justification is an unsatisfiable set.
Justification may also refer to ad hoc hypotheses and explanations
Rationalization (making excuses), a phenomenon in psychology

the one in bold links to:

http://en.wikipedia.org/wiki/Rationaliza...g_excuses)

In psychology and logic, rationalization (also known as making excuses[1]) is an unconscious defense mechanism in which perceived controversial behaviors or feelings are logically justified and explained in a rational or logical manner in order to avoid any true explanation, and are made consciously tolerable – or even admirable and superior – by plausible means.[2] Rationalization encourages irrational or unacceptable behavior, motives, or feelings and often involves ad hoc hypothesizing. This process ranges from fully conscious (e.g. to present an external defense against ridicule from others) to mostly subconscious (e.g. to create a block against internal feelings of guilt).
People rationalize for various reasons. Rationalization may differentiate the original deterministic explanation of the behavior or feeling in question.[3][4] Sometimes rationalization occurs when we think we know ourselves better than we do. It is also an informal fallacy of reasoning.[5]

Do you consider indifference to be failure? It's not.

In the context of spiritual growth, I don't believe in failure. There is only efficient use of catalyst, and inefficient use of catalyst.

We can, however, fail to reach desired goals we might have set for ourselves at the soul level.

Balance is not indifference but rather the observer not blinded by any feelings of separation but rather fully imbued with love.

Not sure what you're getting at with this quote, but to me, turning our backs on an opportunity to be of service to sentient beings, whose suffering is affected by our choices, isn't exactly being 'fully imbued with love.'