Personally i think that it should be done.
Saying that though i would like the clones to be never let out, and live lives.
Keeping Clones would only benefit us, we could have a full body waiting for us.
But, I think the cloning help should only be used for people under the age of 30, only they should get a second chance and then once they go over 30, thats it there on there own.
There Clones would be killed and they would have to be careful.
But again, How should the second chance be used?
It should only be for people who didn't have a choice in there misfortune, like babies born with mental or physical retardation, or diseases brought on naturally.

Personally if Cloning were to happen it the clones would have to be kept in the lab.