The basic and most common definition of clone refers to the process of producing a copy or imitation of one or any biological form so that each portion grows or produces only it's own kind.
Nearly all educated people are familiar with this definition of the word clone, invented by J.B.S Halden. But unfortunately very few understand it's meaning in the context of human cloning, which is a general reference for molecular, cell and organism cloning. This is because cloning can be of a natural process as defined above, It is called asexual reproduction in plants and other life forms.
Human cloning on the other hand is an artificial process which involves the creation of identical copy of a human. The process is achieved through molecular, organism and cell cloning as mentioned above. In a lay man's language, human cloning simply refers to making another you, that looks and shares the same form, both on the inside and outside, through the means of science.
Going back to the question, I believe human cloning isn't a bad procedure and should be allowed only if it can be controlled and restricted to just organ replacements as a means of health improvement. An instance will be someone suffering from kidney failures, cloning can save such person from certain death by producing a new and better organ. But as we all know, humans are prone to abusing every system, playing God like will be one problem to be faced with human cloning as some might even see the process as a means achieving immortality. It will be almost impossible to put human cloning under total checks and regulations. Look what we've done with plastic surgeries, you can only imagine the extent people will go to achieve their cloning expectations.
In saying so, it is of my opinion that human cloning will cause more harm than good to the society. And judging from our past experiences and behaviors towards other striving achievements of man, cloning will just be an additional problem distorting the natural balance between life and death.