I know it's been pointed out elsewhere, but it's also possible to make a commitment to only eat meat that has been raised humanely. This is what I do. I only buy grass-fed beef and cage-free chickens and eggs. "Organic" labels on meat include some animal welfare protections as well (for example, ruminants must be allowed access to pasture in order to be labeled organic) so this is a good thing to look for.

This kind of meat is more expensive, which means I eat less of it, but I can still have a hamburger if I really want it and enjoy it pretty much guilt-free. An animal has still died, but I'm okay with that.