text: what are the clones usage? what are the effects in humans, animals, plants, etc. well, the main purpose of clones ( so say the scientist ) is to be able to use their organs for people that are sick. they also are useful for trying to cure some diseases ( like parkinson )by using their brain cells while they are developing.  this is really cruel anyway. if you want my opinion i think that cloning is pointless and is just an attempt of humans to play god. we are too proud to accept that a "scientific advance" is just for the sake of doing it so...  we have to give a purpose.