If slaughter can be humane (painfree and stressfree) then why is it so hard to convince the meat industry to make it humane. This question would be much more important for me to answer than whether using animals for meat in general is a good idea.
I agree with Birgit on this point.
There is something like the circle of life wherein some hunters and prey both have to live together.
If God (or whatever you call him/her) had intended it differently, than it should show as much.
I have been a total vegetarian for over 12 years in the past, partly because of health problems but also because organic meat was hard to find/afford.
One day I started to eat some meat again as the health problems changed for other ones (not any better) and also because I met my husband who is a proper 'omnivore' and who loves his piece of meat regularly.
My dogs and cat also receive raw meat/fish. Not in too big quantities, but still.
Organic meat was up till now the best choice to me, as I assume their lives have been happier and hopefully their death more humane. But I have no proof of that. And my budget usually does not allow me to choose for all-organic meals either...
I have lived a few years of my childhood in Congo where my parents had to kill their own chickens to eat.
(I guess I would be very quickly vegetarian again if I had to do so...
I always remember my mum saying that the chickens were given a bit of whisky to drink before, so they would not feel the stress so much and than the meat was much softer.
I guess that I would also prefer to be slaughtered drunk than totally aware of what is happening.
So whatever can be done to make slaughterhouses a better place, I think it should be done.
So I am very happy that people like Temple Grandin exist and have made their voice heard.
Also I enjoy a small piece of meat again every now and than, with respect for the creature that died for me.
Without having to feel like a murderer... but savouring the best taste that the meat can offer.