What are the odds that we ourselves are to have issues. With science always advancing we could use the clone body for body parts that we need like a heart. We could always have cure to something when we use our clone parts since it's us we are taking things from. Everything should fit perfectly unless you weren't cloned correctly.
It's already been said, but usage of cloning separate parts of a human would be an extraordinary advance in medical science, allowing those in need of organs and other replacement surgeries to have a chance if a suitable donor in unavailable. "Playing God" with cloning, however, is a dangerous idea which could bring forth dire ramifications in the future. Being able to create copies of humans could lead to unique brands of crime and slavery (although this is seems far-fetched, people always exploit new ideas for selfish and criminal purposes), and also other issues with population control, keeping records of living people, employment, ect. Cloning is a procedure that would have to be very, very tightly controlled and regulated, and is probably a technology best left to organs and scientific curiosity for fear of creating a logistical nightmare.
Are of an emotional and religious nature anyway (such as "it's unnatural", "it goes against God", or the one that makes me grit my teeth "it's wrong!") which should be of no consequence in a scientific setting.
Being able to produce humans under controlled conditions would see an explosion in medical knowledge almost overnight. It would allow us to study and better understand (human) evolution on a reasonable timescale.
Unfortunately this society is far too stuck in its own "morals" to ever approve research in such a procedure (much less allow the procedure itself be used as a research tool if it had already been perfected) in the foreseeable future. It's a shame.
There are issues with cloning. Dolly aged rapidly. So right now for reproductive purposes, NO. But in the future after we've worked out the kinks, yes. It would be useful for some people just like in-vitro technology is useful for some people.
And before that for medical purposes, only if we can avoid creating a conscious person in the process like say if we cloned just the liver without the rest of the person.
Cloning a person for medical purposes for me is an inhuman act. You will create a human like you so you can take his/her body parts when the time comes. Creating a living creature which is not a creation of God and killing him/her in the end because you needed his heart, his liver, or whatever major parts that you need to be replaced is an action of an unnatural person; an injustice and a treason against God.
I mean I could see how this could be beneficial to the medical world, but how accurate would it be. Maybe it's just something way out of the norm to process but what would be the point in cloning yourself, are people that self-absorbed that they need another version of themselves. How would the repercussions be on crime, would the "owner" of the clown be responsible ?. How about being in a relationship how would someone tell the difference? Just don't see it. Like I said maybe in the medical world, but we are already making progress with stem cell research.
What would be the use of cloning people? Clearly, a cloned person would still have human rights and therefore can not be killed and used for research and body parts. Also, why clone someone when there are plenty of naturally created people in the world, creating cloned people, if it would have any effect at all, would only reduce precious genetic diversity. Cloning may have considerable defects that could ruin a persons life, or cripple him/her. As for experimentation, just stick with sheep.