How likely are any intelligent beings on other worlds to look like the gray aliens from pop culture? Not very. To find a humanoid form on another world, a whole series of unexpected events would have to been replicated. Early hominids adapted to a particular niche on the savannas of Africa, their upright posture letting them see stronger, fiercer predators at a distance. Under a different environment, having a brain at the top of the body might be a liability, with increased risk of damage by falling but with no great advantage to compensate.
Abbie^ thats not true there would still be a percentage and a chance to have a child. Same as with animal clones, many have reproduced successfully and had healthy babies that survived through their adulthood.
I agree with cloning can save us, think of all the abnormalities humans have these days, and cancers, diseases etc. Who's to say we don't deserve the chance to have a clone of ourselves, imagine all the things they could help us with!
And if we need organs? Shall we wait endlessly on line for an organ that may or may not come to us on time? If we could clone, we could clone a healthy organ and transfer it into ourselves faster than before, therefore saving our own lives.