Have we truly been ready for any of humanity's technological developments? They tend to be very messy, and lead to all sorts of consequences few could predict.
In fact it’s very unlikely. On Earth we have a planet full of the results of 4bn years of competitive evolution. Put that against one single species resulting from evolution. The chances are at least one species on Earth will eat its lunch. Furthermore Earth life is customs tuned to the Earth environment, but the space bug is most likely optimised for a different environment.