I grew up on a small farm and we had to kill animals for our family's provision. Not only did we kill animals for eating, but my father hunted and trapped animals for their hides. He would sell the hides to make money to support our family. Being the oldest child it was my job to hold that dead animal while my dad skinned the hide from it's body. I can relate to the sacrifice instructions in the Bible. Being a "farmer" vs a "city" person may play a small part in the actual process of the killing and blood-letting of the animal, but it doesn't make you any less sensitized from the ordeal.
We were taught to appreciate all of God's creations, and realized that God Himself has provided those animals and even plants for our protection and provision. This type of mind-set keeps a person from hunting and killing animals for "pleasure".