@pastanaga - The problem with using lamb in halal meals is that many of the countries with a demand for halal meat can't provide enough of their own. So other countries pick up the slack.
But, they aren't allowed to slaughter the animals on their own soil, because those carcasses might not be considered halal. So the animals are shipped, alive and packed into holds, to the countries which will slaughter them. Many of them will die on the way in deplorable conditions.
I agree that the method of slaughter for halal meats isn't the problem, but the transport of animals to satisfy those methods is a problem.
I'm not a vegetarian, but I do believe that if we are going to keep animals for food, we have a moral obligation to ensure that those animals were treated well before they die.