This is probably an odd question and open to all posters but it just came to mind so I want to ask-how does it feel to actually be from the place where you live? Like you were born there and so were your parents and so were their parents?
My sister did do one of those ancestral DNA tests, which suggests that our family has never moved very far from about 40 square miles. 
Are you assuming that staying-put is true of Irish people in general, though? In fact, I think (other than customs surrounding death and funerals) one of the other big differences between English and Irish people (I can say nothing for Welsh people and Scots, not having spent any real time in either country) is attitudes to emigration.
Obviously there's a long tradition of Irish economic emigration since the Famine (1.5 million people emigrated between 1845 and 1855), and moving abroad for long or short periods, or for a lifetime, is seen as a perfectly usual thing to do -- I remember being very taken aback by threads on Mn which made it clear that it was seen as quite an unusual, even anomalous thing to do, and there were remarks about selfishness and people saying they weren't 'going to do that my parents'.
My generation (I left school in 1990 in a bad recession which had lasted for years) always knew we had to leave for jobs, and we all tended to work abroad (mostly UK or US) for the summer holidays when we were students. Since 1993 I've lived in the US, France, the ME, London and various other parts of England, and in Ireland, for various periods of several years at a time. At one point my parents had children in Dublin, Beijing, Boston and Dubai. I think this is pretty usual.