I think this is excellent news.
Since Episode VII was first announced, Abrams has always been the right
guy for the job.
I also don't think he will completely turn his back on Star Trek. He he doesn't direct part three himself, he will at the very least produce it--like he had originally talked about with STiD.
No one's childhood is going to be ruined. The world will continue to turn, and these two great franchises will continue to flourish.
I hope Paramount doesn't waste any time moving forward with the next movie.
No more for year gaps.
Also this must be a pretty big slap in the face to Paramount. They were super patient with J.J. They put the entire Star Trek franchise on hold to wait for him to do SUPER 8.