Clones, Ghost in the shell, dat ass, and everyone loves sci-fi

inb4 we get off topic.

So, let's assume that at least 100 years from now, we have clones, and robots and Africa's AIDS completely wiped out the continent(inb4 AIDS isn't funny).
Let's say someone doesn't like their body, is getting old, or has a horrible disease (inb4 another AIDS joke), since we can create clones, what's stoping us from sending that persons concious/mind/soul/wtfever into that body, and they continue from there? Would this be possible? How expensive would this be, really, with all the advancements by then? How do you think they would go about it (the scientist)? Would you do it, just to try (inb4 transexual)?