Were the Ice Age Scots Mad?

Evidence of human occupation in Scotland 13,000 years ago has caused scientists to speculate the possible motives for choosing to live there - given that most of the country was covered in ice:

During the last ice age, Scotland was likely a desolate place covered by glaciers, but new evidence suggests intrepid settlers braved the elements by establishing a community there as early as 13,000 years ago.

..."So often we hear that conditions in Scotland during the late Paleolithic and early Mesolithic would have prohibited human settlements because the landscape was cold and icy, but now we have to wonder what was actually going on and why people appear to have been living in the area during what is thought to have been a glacial period," Naomi Woodward, who led the project, told Discovery News.

....The northern European plains location suggests Scotland's first settlers were reindeer hunters from the Ahrensburgian culture. Reindeer exist in Scotland, but the researchers suspect the hunters also went after more prevalent deer and other large herbivores. If attached to spears, the points could have also been used to stab fish and marine life.

And so it goes on...

It makes little sense for people to have been living in the Scottish ice by choice.

Perhaps scientists haven't considered that the pole shift of that era relocated the site of the North Pole, and now in a sunnier clime Scotland rapidly defrosted. And after it had defrosted, then humans ventured up there...