I understand the dilemma some feel at eating other animals, but we ARE omnivores. It is howW we developed and how our ancestors have lived and thrived for countless generations.
I suppose that it carries a lot of responsibility being at the top of the food chain - but I say to try to harvest (kill) as humanely as possible and also to try to consume the very healthiest natural forms of meat - wild caught, free range, organic, grass fed, etc.
I personally never recommend anyone to go all the way vegan and plead with them that when they do that they plan and supplement very carefully. Otherwise, you may be setting yourself up for some serious health issues down the road.