One always begins with the simple, then comes the complex, and by superior enlightenment one often reverts in the end to the simple. Such is the course of human intelligence.
Eating meat is a leftover of the greatest brutality [killing]; the transition to vegetarianism is the first and most natural consequence of enlightenment.
According to accounts of the Buddha's life, it would seem that he had a very deep relationship with nature. He was not born in the royal palace but in a park, under a sala tree. He attained complete enlightenment under the bodhi tree and left this earth to enter Parinirvana, again, between three sala trees. It would seem that the Buddha was very fond of trees.
Instead of striving towards some distant goal that you will never reach, I invite you to stop and ask: How am I avoiding the enlightenment that is already present in each moment? How am I seeing separation where it doesn't exist?