(To beginn with, I would like to say sorry for my rather bad english.)
As far as my opinion goes, I do not like the fact that extincted animals should be cloned and thus reanimated for our entertainment, and held in Zoos. I would accept it, if Scientists choose to clone these animals for scientific reasons and because of scientific interest, and are held in natural reservarts that align to their pre-extinction living-habitat. But I would never accept the idea to do this only for "FUN".