I'm a meat eater. I f*cking love it. I'm also acutely aware that the animals didn't die in their sleep on a huge silk pillow.
Putting myself in the position of the animal I can't say I have a real clear preference between being hung upside down and having my throat slit or being hung upside down, electrocuted, then having my throat slit.
As was mentioned above, unless you're a vegan, you can't really complain about any particular method of killing animals as they're all pretty brutal.
The other night I had a blazing row with the wife, who's suddenly decided she's vegatarian and was disgusted at scenes on the Jamie Oliver programme. I told her to go into her wardrobe and throw out all her boots, shoes, belts and bags if she feels so strongly about the ethical treatment of animals.
Then I punched her in the ovaries.