I totally agree!
As I see it, there is some lack of awareness within the general population about these topics. Within the life sciences, not everything is black or white. Quite on the contrary actually. A lot of research was put into these discoveries. They are constantly being refined to diminish the cons. But we're talking of biology and a biological system can be very unpredictable. Sometimes the same organism respond in a way at a given time, but that could change without any noticeable reason afterwards. That's why it has been difficult to tackle many problems and diseases, for example.

There is still a lot we don't know or control. So weighing the pros and cons is very important, because as you said there will always be cons. At least just for now, I hope :)

Note: Just in case someone might question, I'm talking about scientific based cons, not possible political agenda ones. Thanks