At what point does it get out of hand

Reading the HeLa article inspired me to blog about a big issue of which there should be a certain is the issue of cell cloning. There comes a point where we cannot account for what we produce, and that humanity may become unnatural, and not what we intended to create. I would draw upon a quote that come at the very end of the article.

"There can be more life in its technological form than its original, bounded, mortal container".

Sure cell reproduction sounds great, but who wants to get to the point where you just have no say over what you're creating because some other group has the same control you have and wishes to use it for evil intentions, like creating people who are huge enemies to Humanity such as Adolf Hitler. Most parts of the HeLa system are beneficial to Humanity, and it seems all very well intentioned, just at what point does it cross the barrier from beneficial research to a terrorist weapon? As such I think that cellular cloning should be kept to animals or should be completely governmentally regulated.