The Roslin researchers were surprised by the fuss. The head of PPL Therapeutics, the firm formed to develop Roslin's cloning techniques commercially, wasn't. And if you take a step towards immortality, everybody stops and takes notice. The furore was worldwide and the revulsion immediate, but humans may indeed one day be cloned. The mother, the cell donor, was long dead, and Dolly is a different identity.
Immortality is a long way off.
The troubling conclusion is not that Dolly is against the laws of nature, but that, once again, nature seems to have peculiarly flexible laws.