This is a ludicrous argument. Killing isn't humane, however you do it. Most of humanity are meat eaters (or would be if they could afford meat). It isn't normal for an omnivore to abstain from meat (as I told my wife earlier today when she was moaning about the fact that a restaurant she is going to only has two vegetarian options on the menu).
Vegetarians apart, the rest of us enjoy eating dead animals, and the majority would prefer that someone else do the slaughtering and butchering. And fishing and gutting for that matter. Unless you have religious reasons for preferring one form of slaughter over another, I can't see that it matters how the animal was killed. To get your Wiener Schnitzel, somebody had to kill a calf. Whether it took 10 seconds or 60 seconds to die ultimately makes no difference - it's dead now, and it wouldn't have been if you hadn't wanted your meat.
On the other hand, if you hadn't wanted your meat, the calf wouldn't even have had an existence in all probability. Meat animals are raised to be slaughtered for market, and if we, the customers, didn't want the meat, no one would breed the animals. They don't just roam wild, for the most part.
I'd be off to cook myself a nice piece of rump steak right now, if I could afford to buy one. It wouldn't be kosher, because Jews don't eat meat from the hind-quarters of animals, even when they are traditionally slaughtered, which it wouldn't be in my case, as I live in Suffolk and there isn't a kosher butcher within miles. Come to think of it, there aren't that many other Jews near here, either.

This shows a little bit of ignorance i think. Yes the sole purpose of animals that are raised on farms etc is to provide food stuffs for us and our own needs. But it is still a life.
If someone is barbaric and cruel, they would say it doesn't matter how it is killed. Its still a living entity that feels pain and fright, and as daft as what some animals are, alot of them still know the end is coming, so much so they shake uncontrollably and sh*t themselves.
Yes killing isn't humane, but it can be (and should be IMO) as quick and as pain free as possible. Respect should be given to the animal, they are magnificent creatures, that die to feed the human race, alot of which are selfish self serving idiots IMO. :-/waiting for the responses to this!
I'm not sure I like to be patronised, but ignoring that, in what way I am I showing ignorance?
My point is that I consider it far worse to terminate the existence of a creature than to cause it pain in the act of terminating it's existence. I know that in order to provide my meat, animals have to be killed, and although I'm not completely happy about this, I accept it.
I think that if I could continue to live the life I lead now, but had to kill meat animals myself, I'd become a vegetarian. I also think that in the (highly improbable) eventuality that I was in a survival situation where I had no alternative but to kill animals for food or starve to death, I would have no compunction whatsoever in killing anything I could kill by whatever means I could contrive.
I don't think I am either barbaric or cruel. The comment I made about it not mattering how the animal is killed needs to be taken in the context of the discussion, which is to say, the comparison between religious ritual slaughter and "humane" slaughter. I do not generally condone the torture of animals, but I am not sentimental about them either. And I value the life of any human being, "selfish self serving idiot" or otherwise, above that of any animal, "magnificent creature" or otherwise.
I have no experience of slaughterhouses, so I stand open to corrrection on what I am about to say. It is my understanding that in this country, and many others, good practice ensures that animals are not subjected to the sight of other animals being killed. This is partly for humane reasons, and partly for commercial reasons, because inducing fear in livestock releases hormones which reduce the quality of the meat. I doubt very much whether any animal has experienced more fear bcause it has worked out that it will have it's throat cut rather than be stunned or have its brain destroyed (if it is lucky) by the use of a captive bolt gun. It just smells the blood of the animals that went before, and it's survival instincts take over.