Karen Thorburn shares her personal perspective on St Kilda – Scotland’s ultima thule. Half my lifetime ago, in 2002, I found myself on holiday with my parents, standing atop huge sand dunes overlooking a magnificent beach on the west coast of the island of Berneray in the Sound of Harris. Pristine golden sand stretched in either direction as far as the eye could see, and turquoise water broke in waves on the shore. The little island of Pabbay lay to the north and, to the west, we looked beyond the Outer Hebrides to a vast expanse of open sea, or…