While I agree that we are not currently ready for the arrival of superintelligence, I think it's worth emphasizing that there is time to prepare, that there is useful preparation to be done which may get things to a point where it will be safe (or at least marginally safer), and that if you are feeling worried, it may be best to channel that feeling into useful action and get involved with the research!

Good places to start are the Machine Intelligence Research Institute's Research Guide (https://intelligence.org/research-guide/), which summarizes the aspects of the problem they've worked on and think are important; and the Future of Life Institute's Research Priorities (http://futureoflife.org/static/data/documents/research_prior...), particularly Section 3.