The world of science is largely convinced that this is a good thing, though the recent vote at the House of Lords looked like a close call for a time. I think not. When we mess around with basic biology and human nature there are always fundamental issues to consider. Using an otherwise unwanted embryo for research is something we do need seriously to address, even if there are possible new treatments in the offing. What I find so amazing is the way we become so worked up over some issues, while accepting far bigger problems almost without demur.
Abortion is a commonplace matter in today's Western world.
It does involve the removal, and destruction, of developing babies who are often capable of life. Sometimes it's because of the personal ambitions of the mother. Yet we do things in society that are far more unnatural than cloning, and which raise huge ethical issues that few people debate. Artificial insemination by donor is one. Donated ova are another.