To say AI will be important is like saying 'guns' will be important or 'internal combustion engines' will be important around the time they are created. In the past these creations took some time to massively change the world, but they did so in unimaginable ways. With AI we are not going to get the benefit of time, especially if the growth rate of the intelligence of AI keeps at is recent, or even faster trajectories.

If there is any chance that we could, even unintentionally, create super intelligence the only ethical answer is to not create it at all. It would be a species ending mistake at our current level of knowledge.