Historically, my understanding is that debates like this tend to die out pretty quickly once the technology becomes cheap and mature enough. The book "The Singularity is Near" covers this quite a bit in contexts like fertility treatments, etc.
From the biotech stuff I'm reading (all dumbed-down, layman level stuff), it looks like we're heading toward growing meat directly, rather than growing a cow to kill it. Right now, plenty of people are bound to be disgusted by the idea of cow-meat factories. But, when the two products are side-by-side in a supermarket, and look identical, and taste identical, and the cloned meat costs half as much... many of the formerly opposed will try it.
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