I have personally thought that nature is a cycle, a circle. All things require nourishment...everything...in order to live, in order to grow, in order to become more. In order for something to live, something must die. But what dies is only the physical, the material, not the spirit. All living things have spirit and everything is alive, everything, not somethings, everything. No matter which way you look at it, something will always die in order for you to live. This is a law of nature, and you cannot escape it. You can say to yourself that will not eat meat because you cannot kill something to nourish yourself, so you become a vegetarian. Plants are just as much alive as an animal, so you become a killer just the same.
The roof over your head that protects you from the elements was provided by nature and something died so you could live. The clothes you wear to protect you have been provided from nature and something died so you could live. What you need to realize is that it does not matter what natures provides for you. You are a part of nature, and what you have taken from her, will eventually be given back. This is the cycle of nature. What goes around, comes around. the problem with society is that we do not see ourselves as part of nature, we see ourselves as above it. We see nature as something to be exploited, what I mean by exploitation is that we take more than we need. We do not respect nature, we do not respect its cycle, we do not respect the spirit within nature.
Native American Indians pay homage to what they have extracted from nature. They pay homage to the spirit of whatever it is they have killed in order for them to live. This is "respect" of the spirit within nature, within all living things, within life. This is a very simple thing to do, all you must say is Thank You. So you can bang your head against the wall
if you like, about the choices of the way you wish to nourish your physical body, but in the end, something will always have died so that you could live, it is the cycle that you are apart of, because you are a part of nature. All you have to do is "respect" it.