I am surprised by the number of people defending the meat industry saying it's all fine and humane, with vets etc. Sure in the UK, with our standards when actually monitored, it may be an "alright" environment for an animal to go and be killed.
How much of the meat in supermarkets is from these places? How many of you defending the meat industry remember that most beef was found to be horse meat recently! No one has any idea where the meat you buy actually comes from.
The worrying increase in halal meat with it's anachronistic sacrifice style of meat production, where it is against 'belief' for the animal to be stunned, so while yes of course it is supposed to be stunned, how much of it slips through done the 'proper' way? probably a fair bit.
Not to mention the global and environmental impact of meat production compared to other foods.
The impact of the massive volume of methane gas which is produced by cows populating the planet for our beef, contribute more to global warming and the 'greenhouse effect' than humans.
See recent Carbon Footprint article in New Scientist for more on the industry's destructive impact
So while people will never be convinced to give up meat for all of the reasons mentioned above (convenience etc) it is naive to defend the industry in any way.