I am not talking about human interfere. Natural selection is a fact in natural world. One animal is the food item for other. However, I agree with you in context of human society. As a human meat consumption is not our obligation.

In fact, animal farming is a huge burden on resources and could be avoided.

I agree. Rearing animals for meat consumption is definitely a burden. Vegetarian food items consume less resources from nature while for the same amount of meat, we need 100 times resources in comparison to vegetarian food.