My emotional attachment to Ireland has grown over the past few years at the same rate as my hair has greyed. The two may or may not be related. However, whatever my misty-eyed view of the ole sod might be, I've few illusions about the reality of growing old, or being ill, or both, back home. Even with private health insurance, staying alive in Ireland is an expensive and challenging business. A recent opinion piece in 'The Irish Times', written by a former expat who returned from Canada to dance with Celtic Tiger, has confirmed what I suspected.