Jonah Goldberg has some thoughts on vegan diets and their attempts at meat simulation:

…if one is to take the arguments of the ethical vegans at face value, isn’t it a bit disgusting or immoral to make products that look like the foods they consider most evil? Fake hamburgers are really a marvel, but while they still come up short on the taste front, they certainly look like hamburgers. If meat is murder, why hawk products that look like the mutilated corpse? Consider our views on cannibalism, then imagine selling faux human flesh in, say, the form of human thumbs — “It tastes just like a missionary!” Wouldn’t that still be in poor taste?

Technology advances are going to make this even more complicated in the future. I suspect that at some point cloning technology will enable us to grow meat in a vat, and probably pretty good-tasting meat at that. What does this do to the vegan argument against animal cruelty? Or to extend Jonah’s example, if we could grow long pork without harming any sentient humans in the process, would it be wrong to eat it? Should it be illegal? For that matter, would it really be human flesh? If so, what would make it that — just the DNA content of the cells?

This seems similar to child pr0n, in that one has to separate the act of consumption from the act of production. It’s pretty clearly wrong to produce child pr0n using actual children, but if it’s computer animated, who does it hurt? Yes, I understand the argument that we should discourage the consumption as well, lest it lead to a demand for supply, though I don’t think that the Supreme Court agrees. But how many vegans would eat animal flesh if it weren’t produced from whole animals with brains and nervous systems? Judging by the repeated attempts to replicate the carnivorous experience from vegetation, quite a number, I’d imagine.