Comparing eating meat to smoking, drinking and buggering choirboys isn't exactly a fair comparison...
Smoking, drinking (excessively) and buggering choirboys are bad things. Thus implying that eating meat is a bad thing.
It isn't.
It's natural.
The treatment of animals is poor and something that needs to be combated by the government. As consumers we can help by buying more conscientiously.
Animals being treated badly isn't a good reason not to eat meat - just make sure you ethically source your food. It's like saying that you refuse to wear clothes because Primark exploits children in india to make theirs.