I used to go to the coutry side during summer vacations back as a kid/teen, to our family's old farm, and I watched a pig being killed to be eaten later. What really shocked me wasn't the screaming pig, or the blood and the organs coming out and running through the muddy grass, but the smell coming out of the pig ("I thought this things smell bad... on the outside..."). When that smell came to me I couldn't see anymore of it, I almost fainted. About 8 hours later, I was eating that pig, with no remorse. About a week later I've watched another pig being killed, but I stood still and watched it all. So, when people tell me "oh how can you eat meat, those cute little animals", I tell them that story: if I was strong enough to see it and eat the pig later with no problems at all, then I allow myself to eat meat, guilty free.