For a more sarcastic post:
The idea of vegetarianism so as 'not to hurt living things' is silly. It's a fact plants are JUST as alive as any animal, and it's been proven that plants (at least the ones that were tested) do sense things such as pain... they scar just like any other living creatures, and when damaged, chemicals change throughout the organism exactly like any other creature.
Point #1: Yes... killing a cow does hurt the cow... but they suffer a quick death, and one cow can be used to provide a meal for MANY people... on the other hand a potatoe is plucked from the earth and boiled alive in a pot with multiple other potatoes before they are smashed together... One person may devour half a dozen small potatoes in a single sitting (I know I can with good gravy... mmmm....). It is much more honorable to provide a swift death to ONE creature to feed MANY people, than to boil half a dozen creatures (plants) for just one person.
Point #2: People say you shouldn't eat cows because they're not treated right... trapped in a tiny little pasture, then killed... But I'm from a town with many fields, and many apple orchards. Cows often have MILES to roam around... their entire life is lived in a protected environment where they don't have to do a day's work, surrounded by many friends... they're well fed, well taken care of, and very well treated then they're given a swift, and generally painless death.
Apple trees, on the other hand are packed in so tight you can barely see through three rows. They're roots are smashed and twisted together, given only enough room to barely survive. While a cow gets an instant death, the tree gets parts hacked off and ripped off every year to prune the tree... before it's unborn babies are ripe, they're ripped off the mother tree and consumed while the baby(apple) is still alive. This constant torcher goes on for only a few years before sexual maturity passes it's peak, then the poor creatures are ripped out of the ground and dumped into a large pile, then burnt while they're still alive.
Cows are treated MUCH better than apple trees (note: I lived directly across the street from a large apple orchard for a few years, I've seen the piles of coarpses... it sickened me.)
Last point: people need protein and fat. True, you can stack partial proteins together, and if you try very hard, a solely vegetarian diet CAN sustain you, but biologically, humans were designed (or have evolved, depending on your belief) to eat meat. Protein aside, omega fats found in seafood is ESSENTIAL for a human's brain development and health... how are you supposed to get 'fish fat' out of plants?
My point is: If you don't like meat... don't eat it... but it's NOT morally wrong to eat meat... any more wrong than it is to eat other living creatures (plants), any way. We need to eat to survive, just like everyone else, it's a fact of nature.