Killing and eating animals can be justified in some contexts

I only eat plants and do not kill animals, wear leather, etc., but here's my argument for why I am not a vegan and don't try to stop others from killing animals in some contexts. (Edit: I do often need to purchase meat products for others to eat. I allow my family to eat animal products if they want. I also don't refuse food if it accidentally includes dairy or eggs, but I'm quite strict in a non-vegan context.)

I shouldn't contribute to suffering, even animal suffering. All animals will die, and for many, that death will include suffering. Some animals, in fact, will be hunted, killed, and eaten by another animal. I cannot keep an animal from suffering and dying by not killing it myself. If I don't, it will still suffer and die.​

Certainly it is unethical for me to create an animal's life for the explicit purpose of causing it to suffer and die. I also can't justify contributing to others who do that. In fact, I should try to stop people from doing that. For this reason I oppose factory farming, and most animal farming in the developed world, but if people are raising animals as a food source but providing a quality life and minimizing it's suffering, I can't find a strong objection. I would not farm animals myself, but can't oppose when small farms provide meat for themselves and their communities if it is a key food source, especially in poor, indigenous, or otherwise malnourished communities.

I can't justify sport hunting, trapping and fishing, but I can see a world where people hunt wild animals and eat them, as long as they do so sustainably and with as little suffering as possible. ​I wouldn't do it myself, because I don't need to. I also object to people hunting when they don't need to, but I can't stop those who need to eat from killing and eating an animal, even if my personal sympathies for the animal make me uncomfortable about it.

I don't find any absolutist position to he justifiable, so there is significant grey area for me, but it is far to the, "don't kill animals" side of the spectrum. However, there are some scenarios where I find it justifiable to kill and eat an animal.

Edit: For clarity and transparency, I've fixed the first paragraph to make it clear that I am not strict even though I am seen by non-vegans as being unreasonably strict in my diet.