How much do you think about what you eat?

I think about what I eat all the time. When I eat meat I always think about what they did to kill the animal, was it sanitized where they killed the animal. Thats basically why I don't eat beef because I saw how they make it. I was definitely disgusting. I know that meat provides protein for bodies, but I often wonder what other foods can give us protein other than that. I also question what meats are healthier than the next and so on. Thats really all I think about. I just know when I eat foods I think about how much i'm going to gain after eating.