Meat eating ethical?

[Marsellus Wallace]

Anyone here know of good arguments against the notion that eating animals is unethical? Why exactly is it ok to cage a cow its whole life, slaughter it, and then eat it but it's not ok to cage a human its whole life, slaughter it, and eat it? What exactly is the difference that makes the former ethical but the latter unethical?

If your only argument is "Duhhhh cow tasty!" then please leave. Serious arguments only please.

I think our new incomer(filthy meat) should answer this question