These are situations which arise for a lot of the biotech endeavors, there are aspects of them which are universally agreeable as wonderful. However these are powerful technologies and with that comes along the ability to do morally questionable things. A lot of discussions will need to be had in the future to address all of these potential concerns. However from the perspective of someone doing work on these sorts of enzymes, the potential for good is there and it's what is driving a lot of researchers (I'm sure there are some in it for the glory or something too, but most of us at the bench just want to do something that will help others).