No, I do not think the human race needlessly kills animals for sustenance. As it stands now, without GMOs and our current food supply, we could not feed the entire Earth's population of humans. This is especially so because our population is increasing exponentially, at an alarming rate. It is not feasible to replace a food substance that basically all countries utilize to survive. In addition, there is overwhelming anthropological evidence that suggests without meat, humans may not have developed and evolved the way we did.
However, I do find the industry in the United States for meat deplorable (I cannot speak for other countries, because I am not aware). I still eat meat though, admittedly, out of convenience for myself and my family. I don't really have the money, time, patience or physical well-being to craft a tailored dietary plan that excludes an excellent source of proteins and fats. Vegetarianism is almost always done wrong - or rather, in a way that does not significantly benefit the health of the person engaging in vegetarianism. This is generally because they replace animal fats and proteins with carbohydrates found in pastas, breads, grains, etc. In many cases, vegans and vegetarians may unintentionally make their health worse, resulting in hypotonia, depression, weight gain, etc. This is not always the case and with significant research, intelligence and critical thinking, it can be avoided.
Be that as it may, I still think we can do better. We must utilize our compassion, empathy and intellect to craft better conditions for the animals we're going to eat. I don't think we should be torturing ducks to get foi gras. Chickens should have better living conditions prior to slaughter. You get the gist.
I am not qualified really to offer any more information than what I've already said.
Edited by Coops, 23 August 2015 - 09:04 PM.