"Playing god.." Remember Prometheus? When humans got their hands on fire, an old shaman [forgot his name] was mouthing these very words: "playing god is never safe"... Life is not, nor should it be, safe. Without playing god we'd still be living in the trees, not even in caves. Besides, playing god is a lot of fun and could be made a learning experience, as that shaman found out when another member of the tribe poked a burning branch in his [shaman's] derriere.
Well said. Really "playing God" is a meaningless term, which only means that the accuser doesn't like a particular technology. Environmentalist wackos would say we're playing God by using GM crops.