Well. There was noting to be done for it. Things had happened as they did, time's arrow had yet to be reversed by humans, done was done. If a man spent his life looking over his shoulder at every possible branching of his path he could have taken, he would never accomplish anything. One must learn from history so as not to repeat it, but one must not waste one's energy or time worrying about what might have been. Sorry . . . but people die every day and the galaxy continues on quite well without them. Consider yourself lucky you are one of those as yet unselected by the Fates.