Why would anyone be opposed to de-extinction?

[Scootaloo]

67. That's a fair question

We don't know how much is learned behavior and how much is inborn. This is an especially appropriate question when it comes to the mammoth, since we have no reason to presume that it was any less reliant on mammoth society than elephants are on elephant society. The passenger pigeon as well, seemed reliant on large flocks.

Of course, pretty much everything a California condor needs to get by in life is taught by parents. We managed to effectively de-extinct this creature by using the amazing, cutting-edge, science-fiction technology of... sock puppets.

(who says all baby animals are cute? Yugh.)

These questions are being mulled over and theorized on, long before anyone starts getting the test tubes ready. We're not talking a John Hammond "fuck it, make dinosaurs and throw them on an island to see what happens" stuff here.